D. Grabiner, und J. Lagarias. (1997)cite arxiv:math/9707215
Comment: 46 pages (including abstract page), 5 figures, LaTeX, curves.sty;
minor changes suggested by referee from previous version; that version
revises sections 1 and 3 and corrects minor errors from MSRI 1997-074.
J. Andersen, A. Bene, und R. Penner. (2007)cite arxiv:0710.2651
Comment: 24 pages, 4 figures Theorem 3.6 has been strengthened, and Theorems
8.1 and 8.2 have been added.
A. Bene. (2010)cite arxiv:1010.5275
Comment: This survey (minus minor corrections) was written for and published
in the abstracts for the 57th Topology Symposium which took place in Okayama,
JP 2010. It summarizes the contents of a talk of the same title which
was given by the author at that conference on 8/12/2010.