@article{28625,
      author       = "Joó, I. and Nat. Office of Lands and Mapping and
                      International Symposium on satellite Geodesy Budapest, 28.6.
                      - 1.7. 1977",
      title        = "Scientific contributions to the satellite geodesy and such
                      activities planned Hungary  ",
      year         = "1977",
      note         = "1 sv.",
}