@article{Elle2012,
  author    = {D. Elle},
  title     = {Eine einfache Drehspiegelkamera mit auswechselharer Optik},
  journal   = {Research film = Le film de recherche = Forschungsfilm},
  volume    = {5.1964},
  number    = {1},
  pages     = {54 -- 63},
  year      = {2012},
}