@article{18957,
      author       = "Heckele, Erich and Contraves AG",
      title        = "Mobile Flugbahnvermessungs - Einrichtung  ",
      year         = "1985",
      note         = "1 sv., G 01 C 1/02., 30.6.1981, 30.9.1985., Neunkirch",
}