@article{4553,
      author       = "Sigl, Rudolf",
      title        = "Continental Networks. Report oh the Activities of the
                      IAG-Commission X 1979 to 1983. XVIII IUGG General Assembly ,
                      August 15-27, 1983, Hamburg  ",
      year         = "1984",
      note         = "Mapky v textu. - Liter., 1 sv.",
}