@article{654,
      author       = "Sjöberg, Lars E. and Stocki, Stanislaw H. and The Royal
                      Institute of Technology  and 1st Hotine-Marussi Symposium on
                      Mathematical Geodesy, Řím, 1985",
      title        = "The Accuracy of Geoid Undulations Determined by
                      Modification of Stokes' Formula Using GEM9 Potential
                      Coeffitients  ",
      year         = "1985",
      note         = "8 tab., 7 grafů., 1 sv.",
}