@article{6060,
      author       = "Schädlich, M. and IUGG - IAG, 15th General Assembly
                      MOscow, 1 - 14 August 1971",
      title        = "Deutschen Demokratischen Republik. The Accuracy of
                      schematic extended Astrogeodetic Networks  ",
      year         = "1971",
      note         = "1 sv., 1 sv.",
}