@book{BuffonOtto2006,
  author    = {Georges Louis Le Clerc de Buffon and Bernhard Christian Otto},
  title     = {Herrn von B{\"u}ffons Naturgeschichte der vierf{\"u}ßigen Thiere ; Bd. 2-3, 5-6, 9, 11-12, 14-18},
  url       = {http://caliban.mpiz-koeln.mpg.de/~stueber/buffon/tiere2/index.html},
  year      = {2006},
}