%%% -*-BibTeX-*-
%%% ====================================================================
%%%  BibTeX-file{
%%%     author          = "Nelson H. F. Beebe",
%%%     version         = "1.11",
%%%     date            = "06 September 2003",
%%%     time            = "09:43:17 MDT",
%%%     filename        = "amermathmonthly1990.bib",
%%%     address         = "Center for Scientific Computing
%%%                        University of Utah
%%%                        Department of Mathematics, 110 LCB
%%%                        155 S 1400 E RM 233
%%%                        Salt Lake City, UT 84112-0090
%%%                        USA",
%%%     telephone       = "+1 801 581 5254",
%%%     FAX             = "+1 801 581 4148",
%%%     URL             = "http://www.math.utah.edu/~beebe",
%%%     checksum        = "57349 16784 59303 509726",
%%%     email           = "beebe at math.utah.edu, beebe at acm.org,
%%%                        beebe at computer.org (Internet)",
%%%     codetable       = "ISO/ASCII",
%%%     keywords        = "bibliography, BibTeX, American Mathematical
%%%                        Monthly",
%%%     supported       = "yes",
%%%     docstring       = "This is a bibliography of the journal
%%%                        American Mathematical Monthly (CODEN
%%%                        AMMYAE, ISSN 0002-9890), published by the
%%%                        Mathematical Association of America.
%%%
%%%                        Volume 1, Number 1 appeared in January
%%%                        1894, and there has been one volume per
%%%                        year since.  The journal now appears ten
%%%                        times a year, monthly except July and
%%%                        August, which appear as pairs June/July
%%%                        and August/September.
%%%
%%%                        This file covers the decade 1990--1999;
%%%                        companion files amermathmonthly19xx.bib
%%%                        cover other decades.
%%%
%%%                        Entries with addenda, comments, corrigenda,
%%%                        errata, letters to the editor, and remarks on
%%%                        earlier articles contain cross references to
%%%                        entries for those articles, which are
%%%                        included here for completeness, even if they
%%%                        are duplicated in another of the
%%%                        decade-specific bibliographies for this
%%%                        journal.
%%%
%%%                        The journal has a World-Wide Web site at
%%%
%%%                            http://www.maa.org/pubs/monthly.html
%%%
%%%                        where tables of contents and abstracts are
%%%                        available from January 1997 to date.  URL
%%%                        values in the entries below point back to
%%%                        that site.
%%%
%%%                        At version 1.11, the year coverage looked
%%%                        like this:
%%%
%%%                             1946 (   1)    1964 (   0)    1982 (   1)
%%%                             1950 (   0)    1968 (   0)    1986 (   1)
%%%                             1951 (   0)    1969 (   0)    1987 (   2)
%%%                             1952 (   0)    1970 (   0)    1988 (   5)
%%%                             1953 (   0)    1971 (   0)    1989 (   4)
%%%                             1954 (   0)    1972 (   0)    1990 (  93)
%%%                             1955 (   0)    1973 (   0)    1991 (  92)
%%%                             1956 (   0)    1974 (   0)    1992 (  78)
%%%                             1957 (   0)    1975 (   0)    1993 (  89)
%%%                             1958 (   0)    1976 (   0)    1994 ( 103)
%%%                             1959 (   0)    1977 (   0)    1995 (  94)
%%%                             1960 (   0)    1978 (   0)    1996 (  84)
%%%                             1961 (   0)    1979 (   0)    1997 ( 112)
%%%                             1962 (   0)    1980 (   0)    1998 ( 131)
%%%                             1963 (   0)    1981 (   0)    1999 (  28)
%%%
%%%                             Article:        918
%%%
%%%                             Total entries:  918
%%%
%%%                        Data for the bibliography has been collected
%%%                        primarily from the MathSciNet database, with
%%%                        some additions from the bibliographies in the
%%%                        TeX User Group collection, from
%%%                        bibliographies in the author's personal
%%%                        files, and from the computer science
%%%                        bibliography collection on ftp.ira.uka.de in
%%%                        /pub/bibliography to which many people of
%%%                        have contributed.
%%%
%%%                        The Editorial Office of this journal is
%%%                        fortuitously located in my Department, so I
%%%                        am collaborating with the Editorial Staff to
%%%                        provide advance listing (typically about four
%%%                        months) of papers before they actually appear
%%%                        in print.  Naturally, such entries are
%%%                        subject to revision after publication,
%%%                        notably to provide the missing page numbers.
%%%
%%%                        Work is also in progress to extend coverage
%%%                        of the bibliography collection for this
%%%                        journal back to its initial 1894 volume, and
%%%                        to provide annual, decennial, and cumulative
%%%                        indexes of the journal on the World-Wide Web.
%%%                        However, this work is likely to take several
%%%                        months to complete.
%%%
%%%                        Numerous errors in the sources noted above
%%%                        have been corrected.   Spelling has been
%%%                        verified with the UNIX spell and GNU ispell
%%%                        programs using the exception dictionary
%%%                        stored in the companion file with extension
%%%                        .sok.
%%%
%%%                        BibTeX citation tags are uniformly chosen
%%%                        as name:year:abbrev, where name is the
%%%                        family name of the first author or editor,
%%%                        year is a 4-digit number, and abbrev is a
%%%                        3-letter condensation of important title
%%%                        words. Citation tags were automatically
%%%                        generated by software developed for the
%%%                        BibNet Project.
%%%
%%%                        In this bibliography, entries are sorted in
%%%                        publication order, using ``bibsort -byvolume''.
%%%
%%%                        The checksum field above contains a CRC-16
%%%                        checksum as the first value, followed by the
%%%                        equivalent of the standard UNIX wc (word
%%%                        count) utility output of lines, words, and
%%%                        characters.  This is produced by Robert
%%%                        Solovay's checksum utility.",
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%%% ====================================================================

@Preamble{
    "\ifx \undefined \cprime \def \cprime {$\mathsurround=0pt '$}\fi"
    #
    "\ifx \undefined \Dbar \def \Dbar {\leavevmode\raise0.2ex\hbox{--}\kern-0.5emD} \fi"
    #
    "\ifx \undefined \binom \def \binom#1#2{#1\choose#2} \fi"
}

%%% ====================================================================
%%% Acknowledgement abbreviations:

@String{ack-nhfb = "Nelson H. F. Beebe,
                    Center for Scientific Computing,
                    University of Utah,
                    Department of Mathematics, 110 LCB,
                    155 S 1400 E RM 233,
                    Salt Lake City, UT 84112-0090, USA,
                    Tel: +1 801 581 5254,
                    FAX: +1 801 581 4148,
                    e-mail: \path|beebe@math.utah.edu|,
                            \path|beebe@acm.org|,
                            \path|beebe@computer.org| (Internet),
                    URL: \path|http://www.math.utah.edu/~beebe/|"}

%%% ====================================================================
%%% Journal abbreviations:

@String{j-AMER-MATH-MONTHLY     = "American Mathematical Monthly"}

@String{j-MATH-COMPUT           = "Mathematics of Computation"}

%%% ====================================================================
%%% Bibliography entries.

@Article{Williamson:1946:DWE,
  author =       "J. Williamson",
  title =        "Determinants whose elements are $0$ and $1$",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "53",
  number =       "??",
  pages =        "427--434",
  month =        "????",
  year =         "1946",
  bibdate =      "Sat Oct 31 13:11:21 1998",
  note =         "See addendum \cite{Kaplansky:1995:NTL}.",
  acknowledgement = ack-nhfb,
}

@Article{Jacobson:1982:MVT,
  author =       "Bernard Jacobson",
  title =        "On the mean value theorem for integrals",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "89",
  number =       "5",
  pages =        "300--301",
  month =        "????",
  year =         "1982",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "26A06 (26A24)",
  MRnumber =     "83g:26002",
  MRreviewer =   "A. G. Azpeitia",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  note =         "See errata \cite{Wong:1990:EMV}.",
  acknowledgement = ack-nhfb,
}

@Article{Lehmer:1986:CPS,
  author =       "D. H. Lehmer",
  title =        "Coloring the {Platonic} solids",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "93",
  number =       "4",
  pages =        "288--292",
  month =        "????",
  year =         "1986",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "05C15",
  MRnumber =     "87e:05072",
  MRreviewer =   "Paul A. Catlin",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  note =         "See errata \cite{Kleiner:1990:ECP}.",
  acknowledgement = ack-nhfb,
}

@Article{Benjamin:1987:BMW,
  author =       "Arthur Benjamin",
  title =        "The bisection method: which root",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "94",
  number =       "9",
  pages =        "861--863",
  month =        "????",
  year =         "1987",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "26A99 (65H99)",
  MRnumber =     "89c:26016",
  MRreviewer =   "E. J. Barbeau",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  note =         "See errata \cite{Benjamin:1990:EBM}.",
  acknowledgement = ack-nhfb,
}

@Article{Beebee:1988:EII,
  author =       "John Beebee",
  title =        "Examples of infinite, incongruent exact covers",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "95",
  number =       "2",
  pages =        "121--123",
  month =        "????",
  year =         "1988",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "11B25 (11A07)",
  MRnumber =     "89g:11013",
  MRreviewer =   "{\v{S}}tefan Porubsk\'y",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  note =         "See errata \cite{Beebee:1990:EEI}.",
  acknowledgement = ack-nhfb,
}

@Article{Hayes:1988:EPE,
  author =       "Barry Hayes and Donald E. Knuth and Carlos Subi",
  title =        "Elementary problem {E3267}, a solitaire game",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "95",
  number =       "5",
  pages =        "456--457",
  month =        may,
  year =         "1988",
  ISSN =         "0002-9890",
  bibdate =      "Thu Sep 22 14:57:59 1994",
  note =         "Solutions in \cite{Nijenhuis:1993:SEP}.",
}

@Article{Boyd:1988:DE,
  author =       "David W. Boyd",
  title =        "The {Diophantine} equation $x^2+y^m=z^{2n}$",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "95",
  number =       "6",
  pages =        "544--547",
  month =        "????",
  year =         "1988",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "11D41 (11D25)",
  MRnumber =     "89f:11046",
  MRreviewer =   "Nikos Tzanakis",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  note =         "See addendum \cite{Boyd:1990:ADE}.",
  acknowledgement = ack-nhfb,
}

@Article{Knuth:1988:APA,
  author =       "Donald E. Knuth and Ilan Vardi",
  title =        "Advanced problem 6581, the asymptotic expansion of the
                 middle binomial coefficient",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "95",
  number =       "8",
  pages =        "774",
  month =        oct,
  year =         "1988",
  ISSN =         "0002-9890",
  bibdate =      "Thu Sep 22 14:58:02 1994",
  note =         "Solutions in \cite{Knuth:1990:SAP}.",
}

@Article{Magill:1988:UTS,
  author =       "K. D. {Magill, Jr.}",
  title =        "Universal topological spaces",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "95",
  number =       "10",
  pages =        "942--946",
  month =        "????",
  year =         "1988",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "54C25 (54-01)",
  MRnumber =     "89m:54018",
  MRreviewer =   "J. M. Aarts",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  note =         "See errata \cite{Magill:1990:EUT}.",
  acknowledgement = ack-nhfb,
}

@Article{Knuth:1989:EPEb,
  author =       "Donald E. Knuth",
  title =        "Elementary problem {E3303}, a binary summation",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "96",
  number =       "??",
  pages =        "54--54",
  year =         "1989",
  ISSN =         "0002-9890",
  bibdate =      "Thu Sep 22 14:58:12 1994",
  note =         "Solutions in \cite{Knuth:1990:SEPb}.",
}

@Article{Knuth:1989:EPEc,
  author =       "Donald E. Knuth",
  title =        "Elementary problem {E3309}, a binomial coefficient
                 inequality",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "96",
  number =       "??",
  pages =        "154--154",
  year =         "1989",
  ISSN =         "0002-9890",
  bibdate =      "Thu Sep 22 14:58:14 1994",
  note =         "Solutions in \cite{Knuth:1990:SEPc}.",
}

@Article{Knuth:1989:EPEa,
  author =       "Donald E. Knuth",
  title =        "Elementary problem {E3335}, a deranged recurrence",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "96",
  number =       "??",
  pages =        "525--525",
  year =         "1989",
  ISSN =         "0002-9890",
  bibdate =      "Thu Sep 22 14:58:04 1994",
  note =         "Solutions in \cite{Knuth:1990:SEPa}.",
}

@Article{Andrews:1989:MPR,
  author =       "George E. Andrews and R. J. Baxter",
  title =        "A motivated proof of the {Rogers-Ramanujan}
                 identities",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "96",
  number =       "5",
  pages =        "401--409",
  month =        "????",
  year =         "1989",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "11P57 (05A19)",
  MRnumber =     "90e:11147",
  MRreviewer =   "F. van der Blij",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  note =         "See comment \cite{Robinson:1990:CMP}.",
  acknowledgement = ack-nhfb,
}

@Article{Knuth:1990:SEPb,
  author =       "Donald E. Knuth",
  title =        "Solution to Elementary problem {E3303}, a binary
                 summation",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "??",
  pages =        "348--349",
  year =         "1990",
  ISSN =         "0002-9890",
  bibdate =      "Thu Sep 22 14:58:13 1994",
  note =         "Original problem in \cite{Knuth:1989:EPEb}.",
}

@Article{Knuth:1990:SEPc,
  author =       "Donald E. Knuth",
  title =        "Solution to Elementary problem {E3309}, a binomial
                 coefficient inequality",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "??",
  pages =        "614",
  year =         "1990",
  ISSN =         "0002-9890",
  bibdate =      "Thu Sep 22 14:58:16 1994",
  note =         "Original problem in \cite{Knuth:1989:EPEc}.",
}

@Article{Knuth:1990:SEPa,
  author =       "Donald E. Knuth",
  title =        "Solution to Elementary problem {E3335}, a deranged
                 recurrence",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "??",
  pages =        "927",
  year =         "1990",
  ISSN =         "0002-9890",
  bibdate =      "Thu Sep 22 14:58:06 1994",
  note =         "Original problem in \cite{Knuth:1989:EPEa}.",
}

@Article{Alder:1990:ADS,
  author =       "Henry L. Alder and Ivan Niven",
  title =        "{Award for Distinguished Service} to {Leon Henkin}",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "1",
  pages =        "3--4",
  month =        jan,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "01A70",
  MRnumber =     "1 034 345",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Giblin:1990:BSP,
  author =       "Peter J. Giblin and Donal B. O'Shea",
  title =        "The bitangent sphere problem",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "1",
  pages =        "5--23",
  month =        jan,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "53A05 (57R99)",
  MRnumber =     "91k:53008",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Sutner:1990:GCA,
  author =       "Klaus Sutner",
  title =        "The $\sigma$-game and cellular automata",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "1",
  pages =        "24--34",
  month =        jan,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "68Q80 (05C20)",
  MRnumber =     "91k:68153",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Weinstock:1990:EE,
  author =       "Robert Weinstock",
  title =        "Elementary evaluations of $\int^\infty_0e^{-x^2}\,dx$
                 and $\int^\infty_0\cos x^2\,dx,$ and $\int^\infty_0\sin
                 x^2\,dx$",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "1",
  pages =        "39--42",
  month =        jan,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "26A06 (33B10)",
  MRnumber =     "91a:26004",
  bibdate =      "Sun Dec 07 14:54:45 1997",
  acknowledgement = ack-nhfb,
}

@Article{Newman:1990:NPC,
  author =       "Donald J. Newman and J. S. Byrnes",
  title =        "The {$L^4$} norm of a polynomial with coefficients
                 $\pm1$",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "1",
  pages =        "42--45",
  month =        jan,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "30C10",
  MRnumber =     "91d:30006",
  MRreviewer =   "Joaquin Bustoz",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Nitsche:1990:ICC,
  author =       "Johannes C. C. Nitsche",
  title =        "Isoptic characterization of a circle (proof of a
                 conjecture of {M. S. Klamkin})",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "1",
  pages =        "45--47",
  month =        jan,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "51N20",
  MRnumber =     "90j:51029",
  MRreviewer =   "H. W. Guggenheimer",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Mathias:1990:TTS,
  author =       "Roy Mathias",
  title =        "Two theorems on singular values and eigenvalues",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "1",
  pages =        "47--50",
  month =        jan,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "15A18",
  MRnumber =     "1 034 351",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Coloma:1990:DTF,
  author =       "Teresa L. Santa Coloma and Ralph P. Tucci",
  title =        "A decomposition theorem for finite automata",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "1",
  pages =        "51--54",
  month =        jan,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "68Q70",
  MRnumber =     "1 034 352",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Hungerford:1990:CGT,
  author =       "Thomas W. Hungerford",
  title =        "A counterexample in {Galois} theory",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "1",
  pages =        "54--57",
  month =        jan,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "12F10",
  MRnumber =     "91h:12009",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Newton:1990:SAF,
  author =       "Tyre A. Newton",
  title =        "A simple algorithm for finding eigenvalues and
                 eigenvectors for $2\times 2$ matrices",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "1",
  pages =        "57--60",
  month =        jan,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "65F15 (15A18)",
  MRnumber =     "1 034 354",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Essen:1990:MSL,
  author =       "Arno {van den Essen}",
  title =        "Magic squares and linear algebra",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "1",
  pages =        "60--62",
  month =        jan,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "05B15 (15-01)",
  MRnumber =     "91c:05041",
  MRreviewer =   "Heiko Harborth",
  bibdate =      "Sat Dec 06 23:37:24 1997",
  acknowledgement = ack-nhfb,
}

@Article{Saari:1990:VNB,
  author =       "Donald G. Saari",
  title =        "A visit to the {Newtonian} {$N$}-body problem via
                 elementary complex variables",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "2",
  pages =        "105--119",
  month =        feb,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "70F10 (01A99 70-03)",
  MRnumber =     "91d:70006",
  MRreviewer =   "George Bozis",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Anglin:1990:SPP,
  author =       "W. S. Anglin",
  title =        "The square pyramid puzzle",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "2",
  pages =        "120--124",
  month =        feb,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "11D25",
  MRnumber =     "91e:11026",
  MRreviewer =   "Zhen Fu Cao",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Wagon:1990:ECE,
  author =       "Stan Wagon",
  title =        "Editor's corner: the {Euclidean} algorithm strikes
                 again",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "2",
  pages =        "125--129",
  month =        feb,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "11E25 (11Y50)",
  MRnumber =     "91b:11039",
  MRreviewer =   "K. S. Williams",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Girstmair:1990:TNB,
  author =       "Kurt Girstmair",
  title =        "A theorem on the numerators of the {Bernoulli}
                 numbers",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "2",
  pages =        "136--138",
  month =        feb,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "11B68 (05A10)",
  MRnumber =     "91a:11015",
  MRreviewer =   "L. Skula",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Swan:1990:APQ,
  author =       "Richard G. Swan",
  title =        "Another proof of the quadratic reciprocity theorem",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "2",
  pages =        "138--139",
  month =        feb,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "11A15",
  MRnumber =     "91b:11003",
  MRreviewer =   "Armel Mercier",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Bender:1990:AP,
  author =       "Edward A. Bender and Fred Kochman and Douglas B.
                 West",
  title =        "Adding up to powers",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "2",
  pages =        "139--143",
  month =        feb,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "11B57",
  MRnumber =     "91d:11017",
  MRreviewer =   "B. Garrison",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Zagier:1990:OSP,
  author =       "D. Zagier",
  title =        "A one-sentence proof that every prime $p\equiv 1\pmod
                 4$ is a sum of two squares",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "2",
  pages =        "144--144",
  month =        feb,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "11E25",
  MRnumber =     "91b:11040",
  MRreviewer =   "K. S. Williams",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Friedberg:1990:EPA,
  author =       "Stephen H. Friedberg",
  title =        "Extending the principal axis theorem to fields other
                 than {${\bf R}$}",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "2",
  pages =        "147--149",
  month =        feb,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "11C20 (11T99 15A18)",
  MRnumber =     "91f:11014",
  MRreviewer =   "{\v{S}}t. Schwarz",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Beukers:1990:APL,
  author =       "F. Beukers and J.-P. B{\'e}zivin and P. Robba",
  title =        "An alternative proof of the {Lindemann-Weierstrass}
                 theorem",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "3",
  pages =        "193--197",
  month =        mar,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "11J81",
  MRnumber =     "91d:11077",
  MRreviewer =   "J. Wolfskill",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Bollinger:1990:LTS,
  author =       "Richard C. Bollinger and Charles L. Burchard",
  title =        "{Lucas}'s theorem and some related results for
                 extended {Pascal} triangles",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "3",
  pages =        "198--204",
  month =        mar,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "05A10 (11B65)",
  MRnumber =     "91d:05003",
  MRreviewer =   "C. R. Pranesachar",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Poffald:1990:RTF,
  author =       "Esteban I. Poffald",
  title =        "The remainder in {Taylor}'s formula",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "3",
  pages =        "205--213",
  month =        mar,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "26A06 (34A45 41A10)",
  MRnumber =     "91c:26002",
  MRreviewer =   "G. A. Heuer",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Robinson:1990:CMP,
  author =       "Raphael M. Robinson",
  title =        "Comment to: {{``A motivated proof of the
                 Rogers-Ramanujan identities''} [Amer. Math. Monthly
                 {\bf 96} (1989), no. 5, 401--409, MR 90e:11147] by G.
                 E. Andrews and R. J. Baxter. With a reply by Andrews}",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "3",
  pages =        "214--215",
  month =        mar,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "11P81 (05A19)",
  MRnumber =     "91j:11086",
  MRreviewer =   "F. van der Blij",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  note =         "See \cite{Andrews:1989:MPR}.",
  acknowledgement = ack-nhfb,
}

@Article{Thomassen:1990:LBJ,
  author =       "Carsten Thomassen",
  title =        "A link between the {Jordan} curve theorem and the
                 {Kuratowski} planarity criterion",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "3",
  pages =        "216--218",
  month =        mar,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "55M99 (05C10)",
  MRnumber =     "91g:55005",
  MRreviewer =   "Seiya Negami",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Ewell:1990:NSR,
  author =       "John A. Ewell",
  title =        "A new series representation for $\zeta(3)$",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "3",
  pages =        "219--220",
  month =        mar,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "11M06",
  MRnumber =     "91d:11103",
  MRreviewer =   "Christian Radoux",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Minda:1990:DPD,
  author =       "David Minda",
  title =        "The {Dirichlet} problem for a disk",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "3",
  pages =        "220--223",
  month =        mar,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "31A10",
  MRnumber =     "91e:31005",
  MRreviewer =   "Elgin H. Johnston",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Richter:1990:DCR,
  author =       "R. Bruce Richter and William P. Wardlaw",
  title =        "Diagonalization over commutative rings",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "3",
  pages =        "223--227",
  month =        mar,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "15A21 (15A36)",
  MRnumber =     "91a:15008",
  MRreviewer =   "William H. Gustafson",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Whittaker:1990:RT,
  author =       "Joe Whittaker",
  title =        "Random triangles",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "3",
  pages =        "228--230",
  month =        mar,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "60D05 (52A22)",
  MRnumber =     "91i:60038",
  MRreviewer =   "Herbert Ziezold",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Kopel:1990:NED,
  author =       "Daniel Kopel and Michael Schramm",
  title =        "A new extension of the derivative",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "3",
  pages =        "230--233",
  month =        mar,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "26A24",
  MRnumber =     "91b:26008",
  MRreviewer =   "Paul D. Humke",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Folland:1990:RET,
  author =       "G. B. Folland",
  title =        "Remainder estimates in {Taylor}'s theorem",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "3",
  pages =        "233--235",
  month =        mar,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "26A06 (26A24 26B05)",
  MRnumber =     "91b:26001",
  MRreviewer =   "G. A. Heuer",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Knuth:1990:SPI,
  author =       "Donald E. Knuth",
  title =        "Solution to problem 6575, an identity involving sums
                 and products",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "3",
  pages =        "256",
  month =        mar,
  year =         "1990",
  ISSN =         "0002-9890",
  bibdate =      "Sun Dec 04 12:17:04 1994",
}

@Article{Beck:1990:GSE,
  author =       "Anatole Beck",
  title =        "Greed is (sometimes) not enough",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "4",
  pages =        "289--294",
  month =        apr,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "52C15 (90C25)",
  MRnumber =     "92f:52035",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Jankovic:1990:NTO,
  author =       "Dragan Jankovi{\'c} and T. R. Hamlett",
  title =        "New topologies from old via ideals",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "4",
  pages =        "295--310",
  month =        apr,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "54A05",
  MRnumber =     "91g:54004",
  MRreviewer =   "Ivan L. Reilly",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Calderon:1990:LE,
  author =       "Calixto P. Calder{\'o}n",
  title =        "Letter to the editor",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "4",
  pages =        "311--312",
  month =        apr,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "01A40",
  MRnumber =     "92e:01028",
  MRreviewer =   "Louis Charbonneau",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Garrison:1990:PLN,
  author =       "Betty Garrison",
  title =        "Polynomials with large numbers of prime values",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "4",
  pages =        "316--317",
  month =        apr,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "11N32 (11A41)",
  MRnumber =     "91i:11124",
  MRreviewer =   "John H. Hodges",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Cannonito:1990:IGE,
  author =       "F. B. Cannonito",
  title =        "On inequivalent group extensions",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "4",
  pages =        "317--319",
  month =        apr,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "20K35 (20E22)",
  MRnumber =     "90m:20067",
  MRreviewer =   "R. St{\"o}hr",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Vince:1990:RIP,
  author =       "A. Vince",
  title =        "A rearrangement inequality and the permutahedron",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "4",
  pages =        "319--323",
  month =        apr,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "26D15 (26A48)",
  MRnumber =     "91e:26031",
  MRreviewer =   "Peter W. Day",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Morton:1990:MPD,
  author =       "Patrick Morton",
  title =        "Musings on the prime divisors of arithmetic
                 sequences",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "4",
  pages =        "323--328",
  month =        apr,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "11N37 (11N25)",
  MRnumber =     "91d:11116",
  MRreviewer =   "J. L. Brenner",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Senechal:1990:FFG,
  author =       "Marjorie Senechal",
  title =        "Finding the finite groups of symmetries of the
                 sphere",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "4",
  pages =        "329--335",
  month =        apr,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "20B25 (51F25)",
  MRnumber =     "91h:20004",
  MRreviewer =   "William Harvey",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Burgess:1990:CFC,
  author =       "C. E. Burgess",
  title =        "Continuous functions and connected graphs",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "4",
  pages =        "337--339",
  month =        apr,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "26A06 (26A15)",
  MRnumber =     "91a:26001",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Leslie:1990:MNS,
  author =       "Robert A. Leslie",
  title =        "The $l_2$ matrix norm and the spectral radius",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "4",
  pages =        "339--341",
  month =        apr,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "15A60",
  MRnumber =     "91b:15030",
  MRreviewer =   "Shao Kuan Li",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Lax:1990:ECS,
  author =       "Peter D. Lax",
  title =        "The ergodic character of sequences of pedal
                 triangles",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "5",
  pages =        "377--381",
  month =        may,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "51N20 (28D05)",
  MRnumber =     "91h:51028",
  MRreviewer =   "Hellmuth Stachel",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Groemer:1990:SPG,
  author =       "H. Groemer",
  title =        "Stability properties of geometric inequalities",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "5",
  pages =        "382--394",
  month =        may,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "52A40",
  MRnumber =     "91a:52008",
  MRreviewer =   "G. D. Chakerian",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Richman:1990:SED,
  author =       "Fred Richman",
  title =        "Separable extensions and diagonalizability",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "5",
  pages =        "395--398",
  month =        may,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "12F05",
  MRnumber =     "91c:12003",
  MRreviewer =   "P. Abellanas",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Hirschhorn:1990:BPR,
  author =       "M. D. Hirschhorn",
  title =        "A birthday present for {Ramanujan}",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "5",
  pages =        "398--400",
  month =        may,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "11P83 (05A17)",
  MRnumber =     "91e:11116",
  MRreviewer =   "G. L. Alexanderson",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Kupitz:1990:CFC,
  author =       "Yaakov S. Kupitz and Micha A. Perles",
  title =        "A condition for flatness of curves in {${\bf R}^n$}",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "5",
  pages =        "401--405",
  month =        may,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "53A04",
  MRnumber =     "91b:53004",
  MRreviewer =   "J. Hoschek",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Groen:1990:CVN,
  author =       "Pieter P. N. {de Groen}",
  title =        "A counterexample on vector norms and the subordinate
                 matrix norms",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "5",
  pages =        "406--407",
  month =        may,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "15A60",
  MRnumber =     "1 048 914",
  bibdate =      "Sat Dec 06 23:55:42 1997",
  acknowledgement = ack-nhfb,
}

@Article{Petkovsek:1990:AND,
  author =       "Marko Petkov{\v{s}}ek",
  title =        "Ambiguous numbers are dense",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "5",
  pages =        "408--411",
  month =        may,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "11K16",
  MRnumber =     "91c:11041",
  MRreviewer =   "Kevin S. McCurley",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Boyd:1990:ADE,
  author =       "David W. Boyd",
  title =        "Addendum: {{``The Diophantine equation
                 $x^2+y^m=z^{2n\,}$''} [Amer. Math. Monthly {\bf 95}
                 (1988), no. 6, 544--547, MR 89f:11046]}",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "5",
  pages =        "411--412",
  month =        may,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "11D41",
  MRnumber =     "91d:11028",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  note =         "See \cite{Boyd:1988:DE}.",
  acknowledgement = ack-nhfb,
}

@Article{Beebee:1990:EEI,
  author =       "John Beebee",
  title =        "Errata: {{``Examples of infinite, incongruent exact
                 covers''} [Amer. Math. Monthly {\bf 95} (1988), no. 2,
                 121--123, MR 89g:11013]}",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "5",
  pages =        "412--412",
  month =        may,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "11B25 (11A07)",
  MRnumber =     "91a:11013",
  bibdate =      "Sat Dec 06 23:11:57 1997",
  note =         "See \cite{Beebee:1988:EII}.",
  acknowledgement = ack-nhfb,
}

@Article{Benjamin:1990:EBM,
  author =       "Arthur T. Benjamin",
  title =        "Errata: {{``The bisection method: which root?''}
                 [Amer. Math. Monthly {\bf 94} (1987), no. 9, 861--863,
                 MR 89c:26016]}",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "5",
  pages =        "412--412",
  month =        may,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "26A99 (65H99)",
  MRnumber =     "91c:26013",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  note =         "See \cite{Benjamin:1987:BMW}.",
  acknowledgement = ack-nhfb,
}

@Article{Kleiner:1990:ECP,
  author =       "Hans-J. Kleiner",
  title =        "Errata: {{``Coloring the Platonic solids''} [Amer.
                 Math. Monthly {\bf 93} (1986), no. 4, 288--292, MR
                 87e:05072] by D. H. Lehmer}",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "5",
  pages =        "412--412",
  month =        may,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "05C15",
  MRnumber =     "91a:05044",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  note =         "See \cite{Lehmer:1986:CPS}.",
  acknowledgement = ack-nhfb,
}

@Article{Magill:1990:EUT,
  author =       "K. D. {Magill, Jr.}",
  title =        "Errata: {``Universal topological spaces''} {[Amer.
                 Math. Monthly {\bf 95} (1988), no. 10, 942--946, MR
                 89m:54018]}",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "5",
  pages =        "412--412",
  month =        may,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "54C25 (54-01)",
  MRnumber =     "91c:54021",
  bibdate =      "Sat Dec 06 16:42:13 1997",
  note =         "See \cite{Magill:1988:UTS}.",
  acknowledgement = ack-nhfb,
}

@Article{Wong:1990:EMV,
  author =       "Jingcheng Wong",
  title =        "Errata: {{``On the mean value theorem for integrals''}
                 [Amer. Math. Monthly {\bf 89} (1982), no. 5, 300--301,
                 MR 83g:26002] by B. Jacobson}",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "5",
  pages =        "412--412",
  month =        may,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "26A06 (26A24)",
  MRnumber =     "91b:26004",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  note =         "See \cite{Jacobson:1982:MVT}.",
  acknowledgement = ack-nhfb,
}

@Article{Hoechsmann:1990:SVS,
  author =       "K. Hoechsmann",
  title =        "Singular values and the spectral theorem",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "5",
  pages =        "413--414",
  month =        may,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "15A18",
  MRnumber =     "1 048 918",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Bartoszynski:1990:RSC,
  author =       "Robert Bartoszy{\'n}ski and Wai Chan",
  title =        "A remark on the shortest confidence interval of a
                 normal mean",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "5",
  pages =        "415--417",
  month =        may,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "62F25",
  MRnumber =     "1 048 919",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Dubeau:1990:CBS,
  author =       "Fran{\c{c}}ois Dubeau",
  title =        "{Cauchy-Bunyakowski-Schwarz} inequality revisited",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "5",
  pages =        "419--421",
  month =        may,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "26D15",
  MRnumber =     "1 048 920",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Embry-Wardrop:1990:OMM,
  author =       "Mary Embry-Wardrop",
  title =        "An old max-min problem revisited",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "5",
  pages =        "421--423",
  month =        may,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "26A06",
  MRnumber =     "1 048 921",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Aczel:1990:FEL,
  author =       "J. Acz{\'e}l",
  title =        "Functional equations and {L'H{\^o}pital}'s rule in an
                 exact {Poisson} derivation",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "5",
  pages =        "423--426",
  month =        may,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "26A06",
  MRnumber =     "1 048 922",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Meyer:1990:GHO,
  author =       "Kenneth R. Meyer",
  title =        "The geometry of harmonic oscillators",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "6",
  pages =        "457--465",
  month =        jun # "\slash " # jul,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "70J05 (58F05 58F30 70F05)",
  MRnumber =     "91h:70017",
  MRreviewer =   "Martin Kummer",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Eisele:1990:GCD,
  author =       "P. Eisele and K. P. Hadeler",
  title =        "Game of cards, dynamical systems, and a
                 characterization of the floor and ceiling functions",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "6",
  pages =        "466--477",
  month =        jun # "\slash " # jul,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "58F20 (58F03 58F12)",
  MRnumber =     "91h:58086",
  MRreviewer =   "Gong Fu Liao",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{London:1990:DTT,
  author =       "R. R. London and H. P. Rogosinski",
  title =        "Decomposition theory in the teaching of elementary
                 linear algebra",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "6",
  pages =        "478--485",
  month =        jun # "\slash " # jul,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "15A21 (15-01)",
  MRnumber =     "91d:15022",
  MRreviewer =   "Marvin Marcus",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Granville:1990:RBC,
  author =       "Andrew Granville and Yiliang Zhu",
  title =        "Representing binomial coefficients as sums of
                 squares",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "6",
  pages =        "486--493",
  month =        jun # "\slash " # jul,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "11B65 (05A10 11D85)",
  MRnumber =     "92b:11009",
  MRreviewer =   "{\v{S}}tefan Porubsk\'y",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Robertson:1990:GRO,
  author =       "Tim Robertson and Carolyn Pillers",
  title =        "A geometric regularity from order-restricted
                 statistical inference",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "6",
  pages =        "496--498",
  month =        jun # "\slash " # jul,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "51M20 (62F30)",
  MRnumber =     "91j:51029",
  MRreviewer =   "Volker Strehl",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Ross:1990:SCI,
  author =       "Bertram Ross and Baldev K. Sachdeva",
  title =        "The solution of certain integral equations by means of
                 operators of arbitrary order",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "6",
  pages =        "498--503",
  month =        jun # "\slash " # jul,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "45D05",
  MRnumber =     "91e:45005",
  MRreviewer =   "Paul Eggermont",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Mercier:1990:RB,
  author =       "Armel Mercier",
  title =        "Relations between $\omega(n)$ and {$\Omega(n)$}",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "6",
  pages =        "503--505",
  month =        jun # "\slash " # jul,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "11A25",
  MRnumber =     "91b:11008",
  MRreviewer =   "S. W. Graham",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Mathews:1990:GTC,
  author =       "Jerold Mathews",
  title =        "Gear trains and continued fractions",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "6",
  pages =        "505--510",
  month =        jun # "\slash " # jul,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "11A55 (11J70 40A15)",
  MRnumber =     "91h:11007",
  MRreviewer =   "James N. Ridley",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Halmos:1990:PMS,
  author =       "Paul R. Halmos",
  title =        "Has progress in mathematics slowed down",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "7",
  pages =        "561--588",
  month =        aug # "\slash " # sep,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "01A60 (00A05)",
  MRnumber =     "91j:01032",
  MRreviewer =   "J. Dieudonn{\'e}",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Ferguson:1990:TTT,
  author =       "Helaman Ferguson",
  title =        "Two theorems, two sculptures, two posters",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "7",
  pages =        "589--610",
  month =        aug # "\slash " # sep,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "00A69 (57N05)",
  MRnumber =     "92e:00006",
  MRreviewer =   "Allan Edmonds",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Knuth:1990:SAP,
  author =       "Donald E. Knuth",
  title =        "Solution to Advanced problem 6581, the asymptotic
                 expansion of the middle binomial coefficient",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "7",
  pages =        "629--630",
  month =        aug # "\slash " # sep,
  year =         "1990",
  ISSN =         "0002-9890",
  bibdate =      "Thu Sep 22 14:58:03 1994",
  note =         "Original problem in \cite{Knuth:1988:APA}.",
}

@Article{Berger:1990:C,
  author =       "Marcel Berger",
  title =        "Convexity",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "8",
  pages =        "650--678",
  month =        oct,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "52-01 (52-02)",
  MRnumber =     "91f:52001",
  MRreviewer =   "Peter M. Gruber",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Chern:1990:WG,
  author =       "Shiing Shen Chern",
  title =        "What is geometry",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "8",
  pages =        "679--686",
  month =        oct,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "01A05 (51-03)",
  MRnumber =     "91h:01003",
  MRreviewer =   "Gr. Stanilov",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Graham:1990:WTC,
  author =       "Ron Graham and Frances Yao",
  title =        "A whirlwind tour of computational geometry",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "8",
  pages =        "687--701",
  month =        oct,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "68U05 (01A05 52B55)",
  MRnumber =     "1 072 812",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Hoffman:1990:MSB,
  author =       "David Hoffman and William H. {Meeks, III}",
  title =        "Minimal surfaces based on the catenoid",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "8",
  pages =        "702--730",
  month =        oct,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "53A10 (49Q05)",
  MRnumber =     "92c:53002",
  MRreviewer =   "Friedrich Sauvigny",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Osserman:1990:CE,
  author =       "Robert Osserman",
  title =        "Curvature in the eighties",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "8",
  pages =        "731--756",
  month =        oct,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "53-01 (53-02 53C42)",
  MRnumber =     "91i:53001",
  MRreviewer =   "M. do Carmo",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Thurston:1990:CTG,
  author =       "William P. Thurston",
  title =        "Conway's tiling groups",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "8",
  pages =        "757--773",
  month =        oct,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "52C20 (05B45 20F32 52C22)",
  MRnumber =     "91k:52028",
  MRreviewer =   "Marjorie Senechal",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Feder:1990:T,
  author =       "Tom{\'a}s Feder",
  title =        "Toetjes",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "9",
  pages =        "785--794",
  month =        nov,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "90D06",
  MRnumber =     "92e:90122",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Cohen:1990:SIT,
  author =       "Regina B. Cohen",
  title =        "Set isometries and their extensions in the max
                 metric",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "9",
  pages =        "795--808",
  month =        nov,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "54E40",
  MRnumber =     "92b:54066",
  MRreviewer =   "Grattan P. Murphy",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Ran:1990:SIS,
  author =       "A. C. M. Ran and L. Rodman",
  title =        "On stability of invariant subspaces of matrices",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "9",
  pages =        "809--823",
  month =        nov,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "47A15 (15A60 47A55)",
  MRnumber =     "91k:47012",
  MRreviewer =   "John Maroulas",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Marsaglia:1990:NDS,
  author =       "George Marsaglia and John C. W. Marsaglia",
  title =        "A new derivation of {Stirling}'s approximation to
                 $n!$",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "9",
  pages =        "826--829",
  month =        nov,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "41A60 (01A50 05A10)",
  MRnumber =     "92b:41049",
  MRreviewer =   "E. Rodney Canfield",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Jamieson:1990:FNA,
  author =       "M. J. Jamieson",
  title =        "{Fibonacci} numbers and {Aitken} sequences revisited",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "9",
  pages =        "829--831",
  month =        nov,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "11B39",
  MRnumber =     "92f:11026",
  MRreviewer =   "Shreedhara Prasada Mohanty",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Bloom:1990:CTB,
  author =       "Stephen L. Bloom and Zolt{\'a}n {\'E}sik and Ernest G.
                 Manes",
  title =        "A {Cayley} theorem for {Boolean} algebras",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "9",
  pages =        "831--833",
  month =        nov,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "06E05 (03G05)",
  MRnumber =     "91k:06017",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Filaseta:1990:RTP,
  author =       "Michael Filaseta",
  title =        "Rouch{\'e}'s theorem for polynomials",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "9",
  pages =        "834--835",
  month =        nov,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "30C15",
  MRnumber =     "91k:30009",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Grunbaum:1990:SMP,
  author =       "Branko Gr{\"u}nbaum and Jan Mycielski",
  title =        "Some models of plane geometries",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "9",
  pages =        "839--846",
  month =        nov,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "51G05 (51A30)",
  MRnumber =     "91j:51024",
  MRreviewer =   "J. F. Rigby",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Justicz:1990:RI,
  author =       "Joyce Justicz and Edward R. Scheinerman and Peter M.
                 Winkler",
  title =        "Random intervals",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "10",
  pages =        "881--889",
  month =        dec,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "60C05 (60D05)",
  MRnumber =     "91m:60023",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Schwarz:1990:DSM,
  author =       "Gideon E. Schwarz",
  title =        "The dark side of the {Moebius} strip",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "10",
  pages =        "890--897",
  month =        dec,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "57M99",
  MRnumber =     "92h:57023",
  MRreviewer =   "Serge L. Tabachnikov",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Ungar:1990:MPP,
  author =       "Peter Ungar",
  title =        "Mixing property of the pedal mapping",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "10",
  pages =        "898--900",
  month =        dec,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "11K99 (51M99)",
  MRnumber =     "92b:11055",
  MRreviewer =   "Jean-Loup Mauclaire",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Mirollo:1990:IRF,
  author =       "R. E. Mirollo and S. H. Strogatz",
  title =        "Integral representation of a finite spike",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "10",
  pages =        "901--903",
  month =        dec,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "26A09",
  MRnumber =     "1 079 977",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Desbrow:1990:I,
  author =       "D. Desbrow",
  title =        "On the irrationality of $\pi^2$",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "10",
  pages =        "903--906",
  month =        dec,
  year =         "1990",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "11J72",
  MRnumber =     "91j:11055",
  MRreviewer =   "Jaroslav Han{\u{c}}l",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Knuth:1990:EPEb,
  author =       "Donald E. Knuth and Boris Pittel",
  title =        "Elementary problem {E3411}, two sums over
                 compositions",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "97",
  number =       "10",
  pages =        "916--917",
  month =        dec,
  year =         "1990",
  ISSN =         "0002-9890",
  bibdate =      "Thu Sep 22 14:58:09 1994",
  note =         "Solutions in \cite{Strong:1992:SEP}.",
}

@Article{Knuth:1991:APG,
  author =       "Donald E. Knuth",
  title =        "Advanced problem 6649, a generalized gamma function
                 with independent branches",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "98",
  number =       "??",
  pages =        "168",
  year =         "1991",
  ISSN =         "0002-9890",
  bibdate =      "Thu Sep 22 14:58:19 1994",
  note =         "Solutions in \cite{Knuth:1994:SAPa,Knuth:1994:SAPb}.",
}

@Article{Knuth:1991:EPEb,
  author =       "Donald E. Knuth and John McCarthy",
  title =        "Elementary problem {E3429}, small pills",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "98",
  number =       "??",
  pages =        "264",
  year =         "1991",
  ISSN =         "0002-9890",
  bibdate =      "Fri Aug 12 23:24:40 1994",
}

@Article{Knuth:1991:EPEc,
  author =       "Donald E. Knuth",
  title =        "Elementary problem {E3463}, points in a circle",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "98",
  number =       "??",
  pages =        "852",
  year =         "1991",
  ISSN =         "0002-9890",
  bibdate =      "Fri Aug 12 23:24:40 1994",
}

@Article{Mallows:1991:CCS,
  author =       "Colin L. Mallows",
  title =        "Conway's challenge sequence",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "98",
  number =       "1",
  pages =        "5--20",
  month =        jan,
  year =         "1991",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "39A10 (39B05)",
  MRnumber =     "92e:39007",
  MRreviewer =   "Wolfgang Sander",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Darmon:1991:CFP,
  author =       "Henri Darmon and John McKay",
  title =        "A continued fraction and permutations with fixed
                 points",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "98",
  number =       "1",
  pages =        "25--27",
  month =        jan,
  year =         "1991",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "05A05 (11A55 11B37)",
  MRnumber =     "92a:05003",
  MRreviewer =   "Richard T. Bumby",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Neves:1991:SFP,
  author =       "V{\'\i}tor Neves",
  title =        "Smoothness from finite points",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "98",
  number =       "1",
  pages =        "27--31",
  month =        jan,
  year =         "1991",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "03H05 (26B05 26E35)",
  MRnumber =     "92i:03073",
  MRreviewer =   "Adriana Boh{\'e}",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Toussaint:1991:AP,
  author =       "Godfried Toussaint",
  title =        "Anthropomorphic polygons",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "98",
  number =       "1",
  pages =        "31--35",
  month =        jan,
  year =         "1991",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "52B55 (68U05)",
  MRnumber =     "92e:52022",
  MRreviewer =   "Michael B. Dillencourt",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Day:1991:IAA,
  author =       "W. A. Day",
  title =        "Inequalities for areas associated with conics",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "98",
  number =       "1",
  pages =        "36--39",
  month =        jan,
  year =         "1991",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "51M16 (51N20)",
  MRnumber =     "1 083 612",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Kuhn:1991:DC,
  author =       "Stephen Kuhn",
  title =        "The derivative {\`a} la Carath{\'e}odory",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "98",
  number =       "1",
  pages =        "40--44",
  month =        jan,
  year =         "1991",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "26A24",
  MRnumber =     "1 083 613",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Gilbert:1991:PDM,
  author =       "George T. Gilbert",
  title =        "Positive definite matrices and {Sylvester}'s
                 criterion",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "98",
  number =       "1",
  pages =        "44--46",
  month =        jan,
  year =         "1991",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "15A12 (00A35 15A18 15A48 65F15)",
  MRnumber =     "92a:15009",
  MRreviewer =   "Zdzis{\l}aw W. Trzaska",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Foster:1991:GPP,
  author =       "J. Foster and F. B. Richards",
  title =        "The {Gibbs} phenomenon for piecewise-linear
                 approximation",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "98",
  number =       "1",
  pages =        "47--49",
  month =        jan,
  year =         "1991",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "41A30",
  MRnumber =     "91m:41037",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Flajolet:1991:EPE,
  author =       "Philippe Flajolet and Donald E. Knuth",
  title =        "Elementary problem {E3415}, a hypergenerating
                 function",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "98",
  number =       "1",
  pages =        "54",
  month =        jan,
  year =         "1991",
  ISSN =         "0002-9890",
  bibdate =      "Thu Sep 22 14:58:17 1994",
  note =         "Solutions in \cite{Alvis:1993:SEP}.",
}

@Article{DeTemple:1991:CCL,
  author =       "Duane W. DeTemple",
  title =        "{Carlyle} circles and the {Lemoine} simplicity of
                 polygon constructions",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "98",
  number =       "2",
  pages =        "97--108",
  month =        feb,
  year =         "1991",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "51M15 (51M20)",
  MRnumber =     "92d:51018",
  MRreviewer =   "Murray S. Klamkin",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Bear:1991:PMH,
  author =       "H. S. Bear",
  title =        "Part metric and hyperbolic metric",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "98",
  number =       "2",
  pages =        "109--123",
  month =        feb,
  year =         "1991",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "51M10 (30C99 30H05)",
  MRnumber =     "92k:51029",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Lance:1991:APM,
  author =       "Timothy Lance and Edward Thomas",
  title =        "Arcs with positive measure and a space-filling curve",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "98",
  number =       "2",
  pages =        "124--127",
  month =        feb,
  year =         "1991",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "26A30 (54F50)",
  MRnumber =     "91k:26005",
  MRreviewer =   "G. A. Heuer",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Rao:1991:UCC,
  author =       "K. P. S. Bhaskara Rao and A. Ramachandra Rao",
  title =        "Unions and common complements of subspaces",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "98",
  number =       "2",
  pages =        "127--131",
  month =        feb,
  year =         "1991",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "15A03",
  MRnumber =     "91k:15005",
  MRreviewer =   "E. W. Ellers",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Liebeck:1991:GAR,
  author =       "Hans Liebeck and Anthony Osborne",
  title =        "The generation of all rational orthogonal matrices",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "98",
  number =       "2",
  pages =        "131--133",
  month =        feb,
  year =         "1991",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "15A57",
  MRnumber =     "91m:15034",
  MRreviewer =   "E. W. Ellers",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Richert:1991:HCF,
  author =       "Norman Richert",
  title =        "Hypocycloids, continued fractions, and distribution
                 modulo one",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "98",
  number =       "2",
  pages =        "133--139",
  month =        feb,
  year =         "1991",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "11K06 (11J70 11J71)",
  MRnumber =     "92a:11086",
  MRreviewer =   "Gerhard Larcher",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Butler:1991:PR,
  author =       "James P. Butler",
  title =        "The perimeter of a rose",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "98",
  number =       "2",
  pages =        "139--143",
  month =        feb,
  year =         "1991",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "51M25",
  MRnumber =     "92d:51020",
  MRreviewer =   "Murray S. Klamkin",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Meijer:1991:TAS,
  author =       "A. R. Meijer",
  title =        "A tree among the stepping stones",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "98",
  number =       "2",
  pages =        "144--146",
  month =        feb,
  year =         "1991",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "90C08",
  MRnumber =     "1 089 461",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Liu:1991:ATP,
  author =       "Wen Liu",
  title =        "An analytic technique to prove {Borel}'s strong law of
                 large numbers",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "98",
  number =       "2",
  pages =        "146--148",
  month =        feb,
  year =         "1991",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "60F15",
  MRnumber =     "1 089 462",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Rosenholtz:1991:TMV,
  author =       "Ira Rosenholtz",
  title =        "A topological mean value theorem for the plane",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "98",
  number =       "2",
  pages =        "149--154",
  month =        feb,
  year =         "1991",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "26B12 (54C60)",
  MRnumber =     "91m:26014",
  MRreviewer =   "Mircea Ivan",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Carlip:1991:DSR,
  author =       "Walter Carlip",
  title =        "Disks and shells revisited",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "98",
  number =       "2",
  pages =        "154--156",
  month =        feb,
  year =         "1991",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "26B15",
  MRnumber =     "1 089 464",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Hartig:1991:LRI,
  author =       "Donald Hartig",
  title =        "{L'H{\^o}pital}'s rule via integration",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "98",
  number =       "2",
  pages =        "156--157",
  month =        feb,
  year =         "1991",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "26A06",
  MRnumber =     "1 089 465",
  bibdate =      "Sat Dec 06 17:44:18 1997",
  acknowledgement = ack-nhfb,
}

@Article{Gilbert:1991:HTF,
  author =       "E. N. Gilbert",
  title =        "How things float",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "98",
  number =       "3",
  pages =        "201--216",
  month =        mar,
  year =         "1991",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "76B99",
  MRnumber =     "92b:76016",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Devaney:1991:EEO,
  author =       "Robert L. Devaney and Marilyn B. Durkin",
  title =        "The exploding exponential and other chaotic bursts in
                 complex dynamics",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "98",
  number =       "3",
  pages =        "217--233",
  month =        mar,
  year =         "1991",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "58F23 (30D05)",
  MRnumber =     "92a:58113",
  MRreviewer =   "Ariel Fern{\'a}ndez",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Deshpande:1991:ACC,
  author =       "M. V. Deshpande and Sudhir R. Ghorpade",
  title =        "Algebraic characterization of compact abelian groups",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "98",
  number =       "3",
  pages =        "235--237",
  month =        mar,
  year =         "1991",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "22C05 (22D05)",
  MRnumber =     "92c:22010",
  MRreviewer =   "Dong Hoon Lee",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Myerson:1991:FCF,
  author =       "G. Myerson",
  title =        "First-class functions",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "98",
  number =       "3",
  pages =        "237--240",
  month =        mar,
  year =         "1991",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "26A21",
  MRnumber =     "92f:26008",
  MRreviewer =   "El\.zbieta Wagner",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Barry:1991:SPF,
  author =       "P. D. Barry and D. J. Hurley",
  title =        "On series of partial fractions",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "98",
  number =       "3",
  pages =        "240--242",
  month =        mar,
  year =         "1991",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "30B99 (42A20)",
  MRnumber =     "92e:30002",
  MRreviewer =   "Guillermo L{\'o}pez Lagomasino",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Loeb:1991:NDP,
  author =       "Peter A. Loeb",
  title =        "A note on {Dixon}'s proof of {Cauchy}'s integral
                 theorem",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "98",
  number =       "3",
  pages =        "242--244",
  month =        mar,
  year =         "1991",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "30-01",
  MRnumber =     "92d:30001",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Goffinet:1991:NSC,
  author =       "Daniel Goffinet",
  title =        "Number systems with a complex base: a fractal tool for
                 teaching topology",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "98",
  number =       "3",
  pages =        "249--255",
  month =        mar,
  year =         "1991",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "54-01 (28A80)",
  MRnumber =     "92a:54002",
  MRreviewer =   "Christoph Bandt",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Chalice:1991:CCF,
  author =       "Donald R. Chalice",
  title =        "A characterization of the {Cantor} function",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "98",
  number =       "3",
  pages =        "255--258",
  month =        mar,
  year =         "1991",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "26A30",
  MRnumber =     "92a:26003",
  MRreviewer =   "El\.zbieta Wagner",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Bragg:1991:PDR,
  author =       "L. R. Bragg",
  title =        "Parametric differentiation revisited",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "98",
  number =       "3",
  pages =        "259--262",
  month =        mar,
  year =         "1991",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "26A24 (30C99)",
  MRnumber =     "1 093 959",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Lam:1991:SFP,
  author =       "C. W. H. Lam",
  title =        "The search for a finite projective plane of order
                 $10$",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "98",
  number =       "4",
  pages =        "305--318",
  month =        apr,
  year =         "1991",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "51E15 (05B25 51-04)",
  MRnumber =     "92b:51013",
  MRreviewer =   "E. F. Assmus, Jr.",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Metropolis:1991:SCF,
  author =       "N. Metropolis and Gian-Carlo Rota",
  title =        "Symmetry classes: functions of three variables",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "98",
  number =       "4",
  pages =        "328--332",
  month =        apr,
  year =         "1991",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "26B40 (20C30)",
  MRnumber =     "92d:26024",
  MRreviewer =   "M. Laczkovich",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Beigel:1991:INT,
  author =       "Richard Beigel",
  title =        "Irrationality without number theory",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "98",
  number =       "4",
  pages =        "332--335",
  month =        apr,
  year =         "1991",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "11R04 (11J72)",
  MRnumber =     "92c:11111",
  MRreviewer =   "Richard T. Bumby",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Hall:1991:AEA,
  author =       "J. I. Hall",
  title =        "Another elementary approach to the {Jordan} form",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "98",
  number =       "4",
  pages =        "336--340",
  month =        apr,
  year =         "1991",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "15A21 (15A18)",
  MRnumber =     "92i:15013",
  MRreviewer =   "Juan Miguel Gracia",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Lindstrom:1991:BCI,
  author =       "Bernt Lindstr{\"o}m and Hans-Olov Zetterstr{\"o}m",
  title =        "Borromean circles are impossible",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "98",
  number =       "4",
  pages =        "340--341",
  month =        apr,
  year =         "1991",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "57M25",
  MRnumber =     "92b:57016",
  MRreviewer =   "G. Burde",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Miamee:1991:I,
  author =       "A. G. Miamee",
  title =        "The inclusion {$L^p(\mu)\subseteq L^q(\nu)$}",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "98",
  number =       "4",
  pages =        "342--345",
  month =        apr,
  year =         "1991",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "46E30 (46M35)",
  MRnumber =     "92d:46078",
  MRreviewer =   "Stephen J. Dilworth",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Rudolph:1991:SOT,
  author =       "Lee Rudolph",
  title =        "The structure of orthogonal transformations",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "98",
  number =       "4",
  pages =        "349--352",
  month =        apr,
  year =         "1991",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "15-01",
  MRnumber =     "92b:15002",
  MRreviewer =   "E. W. Ellers",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Lewin:1991:SPZ,
  author =       "Jonathan Lewin",
  title =        "A simple proof of {Zorn}'s lemma",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "98",
  number =       "4",
  pages =        "353--354",
  month =        apr,
  year =         "1991",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "04A25",
  MRnumber =     "1 103 192",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Grant:1991:CLT,
  author =       "Richard Grant",
  title =        "The converse of {Liouville}'s theorem",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "98",
  number =       "4",
  pages =        "354--354",
  month =        apr,
  year =         "1991",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "11J68",
  MRnumber =     "92c:11071",
  MRreviewer =   "Richard T. Bumby",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Cuoco:1991:VAI,
  author =       "Albert A. Cuoco",
  title =        "Visualizing the $p$-adic integers",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "98",
  number =       "4",
  pages =        "355--364",
  month =        apr,
  year =         "1991",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "11S85 (11-01)",
  MRnumber =     "91m:11107",
  MRreviewer =   "Neal Koblitz",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Wilcox:1991:CPW,
  author =       "Calvin H. Wilcox",
  title =        "The {Cauchy} problem for the wave equation with
                 distribution data: an elementary approach",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "98",
  number =       "5",
  pages =        "401--410",
  month =        may,
  year =         "1991",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "35R05 (35L05)",
  MRnumber =     "92h:35227",
  MRreviewer =   "Valeri G. Yakhno",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Katsuura:1991:CND,
  author =       "Hidefumi Katsuura",
  title =        "Continuous nowhere-differentiable functions --- an
                 application of contraction mappings",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "98",
  number =       "5",
  pages =        "411--416",
  month =        may,
  year =         "1991",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "26A27",
  MRnumber =     "92c:26005",
  MRreviewer =   "James Foran",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Bienstock:1991:NFS,
  author =       "Daniel Bienstock and Fan Chung and Michael L. Fredman
                 and Alejandro A. Sch{\"a}ffer and Peter W. Shor and
                 Subhash Suri",
  title =        "A note on finding a strict saddlepoint",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "98",
  number =       "5",
  pages =        "418--419",
  month =        may,
  year =         "1991",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "68Q25",
  MRnumber =     "92m:68041",
  MRreviewer =   "R. E. Stearns",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Osserman:1991:CC,
  author =       "Robert Osserman",
  title =        "Circumscribed circles",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "98",
  number =       "5",
  pages =        "419--422",
  month =        may,
  year =         "1991",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "52A10",
  MRnumber =     "92f:52009",
  MRreviewer =   "H. W. Guggenheimer",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Deeba:1991:SSB,
  author =       "Elias Y. Deeba and Dennis M. Rodriguez",
  title =        "{Stirling}'s series and {Bernoulli} numbers",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "98",
  number =       "5",
  pages =        "423--426",
  month =        may,
  year =         "1991",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "11B68",
  MRnumber =     "92g:11025",
  MRreviewer =   "Bruce C. Berndt",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Lindsey:1991:SPW,
  author =       "J. H. {Lindsey, II}",
  title =        "A simple proof of the {Weierstrass} approximation
                 theorem",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "98",
  number =       "5",
  pages =        "429--430",
  month =        may,
  year =         "1991",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "41A10",
  MRnumber =     "1 104 308",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Henrich:1991:MSL,
  author =       "Christopher J. Henrich",
  title =        "Magic squares and linear algebra",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "98",
  number =       "6",
  pages =        "481--488",
  month =        jun # "\slash " # jul,
  year =         "1991",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "05B30 (15A03 51E30)",
  MRnumber =     "92d:05037",
  MRreviewer =   "Hugo S. Sun",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Whittaker:1991:ADS,
  author =       "James V. Whittaker",
  title =        "An analytical description of some simple cases of
                 chaotic behaviour",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "98",
  number =       "6",
  pages =        "489--504",
  month =        jun # "\slash " # jul,
  year =         "1991",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "58F13 (58F23)",
  MRnumber =     "92h:58137",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Fassler:1991:MPN,
  author =       "Albert F{\"a}ssler",
  title =        "Multiple {Pythagorean} number triples",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "98",
  number =       "6",
  pages =        "505--517",
  month =        jun # "\slash " # jul,
  year =         "1991",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "11D09",
  MRnumber =     "92d:11021",
  MRreviewer =   "Nikos Tzanakis",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Rosay:1991:VEP,
  author =       "Jean-Pierre Rosay",
  title =        "A very elementary proof of the {Malgrange-Ehrenpreis}
                 theorem",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "98",
  number =       "6",
  pages =        "518--523",
  month =        jun # "\slash " # jul,
  year =         "1991",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "35E05",
  MRnumber =     "92e:35047",
  MRreviewer =   "Michael Langenbruch",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Shen:1991:Z,
  author =       "Li-Chien Shen",
  title =        "On the zeros of $\tan^{(k)}z$",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "98",
  number =       "6",
  pages =        "524--527",
  month =        jun # "\slash " # jul,
  year =         "1991",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "30C15",
  MRnumber =     "1 109 575",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Kelly:1991:TES,
  author =       "John B. Kelly",
  title =        "Two equal sums of three squares with equal products",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "98",
  number =       "6",
  pages =        "527--529",
  month =        jun # "\slash " # jul,
  year =         "1991",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "11D25",
  MRnumber =     "92j:11025",
  MRreviewer =   "Nikos Tzanakis",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Gessel:1991:CP,
  author =       "Ira M. Gessel",
  title =        "A coloring problem",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "98",
  number =       "6",
  pages =        "530--533",
  month =        jun # "\slash " # jul,
  year =         "1991",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "05C15 (05A05 05A15)",
  MRnumber =     "92h:05053",
  MRreviewer =   "Luis Verde-Star",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Kwong:1991:NIP,
  author =       "Man Kam Kwong and A. Zettl",
  title =        "Norm inequalities for the powers of a matrix",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "98",
  number =       "6",
  pages =        "533--538",
  month =        jun # "\slash " # jul,
  year =         "1991",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "15A60 (15-04)",
  MRnumber =     "92c:15027",
  MRreviewer =   "Shao Kuan Li",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
  keywords =     "Maple",
}

@Article{Mazur:1991:NTG,
  author =       "B. Mazur",
  title =        "Number theory as gadfly",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "98",
  number =       "7",
  pages =        "593--610",
  month =        aug # "\slash " # sep,
  year =         "1991",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "11G05 (01A99 11-01 11D41)",
  MRnumber =     "92f:11077",
  MRreviewer =   "Joseph H. Silverman",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Riddle:1991:OBN,
  author =       "Lawrence H. Riddle",
  title =        "An occurrence of the ballot numbers in operator
                 theory",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "98",
  number =       "7",
  pages =        "613--617",
  month =        aug # "\slash " # sep,
  year =         "1991",
  CODEN =        "AMMYAE",
  ISSN =         "0002-9890",
  MRclass =      "05A15 (05A40 47B37 47N99)",
  MRnumber =     "92f:05012",
  MRreviewer =   "Daniel Elliott Loeb",
  bibdate =      "Wed Dec 3 17:17:33 MST 1997",
  acknowledgement = ack-nhfb,
}

@Article{Penrice:1991:DPC,
  author =       "Stephen G. Penrice",
  title =        "Derangements, permanents, and {Christmas} presents",
  journal =      j-AMER-MATH-MONTHLY,
  volume =       "98",
  number =       "7",
  pages =        "617--620",
  month =        aug # "\slash " # sep,
  year =         "1991",
  CODEN =        "AMMYAE",
  ISSN =         "0002-98