I am a former student of Mladen Bestvina's.
My research is in the algebraic geometry of the free group (limit groups).
The following papers are nearing completion. Preprints available upon request. The first should appear sometime in the next century. The second will be an extension of the folding paper (The link is to a much newer version of the one on the arXiv.).
In no particular order, a list of papers to get cozy with:
As you can see, trees are important!
email:
, also works for MSN Messenger, if that's your thing.