@article{19444,
      author       = "IUGG XX General Assembly IAG, Vienna, August 11-24, 1991",
      title        = "National Report 1987 - 1990 for the 20. General Assembly of
                      the International Union of Geodesy and Geophysics, Vienna,
                      August 11 - 24, 1991. IAG  ",
      year         = "1991",
      note         = "Liter. - 2 obr., 1 tab. v textu",
}