@inproceedings{Wolfart2005,
  author    = {J{\"u}rgen Wolfart},
  title     = {ABC for polynomials, dessins d'enfants, and uniformization : a survey},
  booktitle = {Elementare und analytische Zahlentheorie : (Tagungsband) ; proceedings ELAZ-conference May 24-28, 2004},
  pages     = {313 -- 345},
  url       = {http://www.math.uni-frankfurt.de/~wolfart/wolfart.html},
  year      = {2005},
}