@article{4208,
      author       = "Cardall, John D. and Cnossen, Richard S. and International
                      Telemetering Conference San Diego. October 13 - 15, 1981",
      title        = "Civil Application of Differential GPS. The International
                      Telemetering Conference San Diego. October 13 - 15, 1981  ",
      year         = "1981",
      note         = "Liter. - Obr. a tb. v textu., 1 sv.",
}