@book{Buffon2006,
  author    = {Georges Louis Le Clerc de Buffon},
  title     = {Herrn von Buffons allgemeine Naturgeschichte, Bd. 3-4},
  url       = {http://caliban.mpiz-koeln.mpg.de/~stueber/buffon/naturgeschichte/band3/index.html},
  year      = {2006},
}