@article{40924,
      author       = "Heus, H. M. de and VIII. Internat. Kurs für
                      Ingenieurvermessung, Zürich, 24. Sept. 1. Oct. 1980. A 10",
      title        = "Zurverlaessigkeit von Netzenlangen  ",
      year         = "1980",
      note         = "Obr. - 1 sv.",
}