@article{KupfferBenecke2008,
  author    = {Carl von Kupffer and Berthold Benecke},
  title     = {Photogramme zur Ontogenie der V{\"o}gel},
  journal   = {Nova acta Academiae Caesareae Leopoldino-Carolinae Germanicae Naturae Curiosorum},
  volume    = {41},
  number    = {P. 1, Nr. 3},
  year      = {2008},
}