@article{291,
      author       = "Kaula, W. M. and XIIth General Assembly of the IUGG in
                      Helsinki, 1960",
      title        = "A Geoid and World Geodetic System Based on a Combination of
                      Gravimetric, Astro - geodetic, and Satellite Data  ",
      year         = "1960",
      note         = "1 sv.",
}