@article{12961,
      author       = "Kirchner, W. and Wolf, H. and Presented at the XIII th
                      International Congress of Surveyors in Wiesbaden 1971",
      title        = "Ingeniervermessung Büro für Vermessung und Planung  ",
      year         = "1971",
      note         = "1 seš., FIRLIT",
}