@article{12247,
      author       = "Tscherning, C.C. and Forsberg, R. and 20th General Assembly
                      of the IUGG, 11 - 24 August 1991, Vienna",
      title        = "Harmonic continuation and gridding effects on geoid height
                      prediction  ",
      year         = "1991",
      note         = "Abstr. - Liter. - Tab. v textu. - Obr. v příl.",
}