@book{Chun2006,
  author    = {Carl Chun},
  title     = {Die Siphonophoren der Plankton-Expedition},
  editor    = {Victor Hensen},
  url       = {http://caliban.mpiz-koeln.mpg.de/~stueber/chun/siphonophoren/index.html},
  year      = {2006},
}