@article{24289,
      author       = "Fischer, Irene and XII Assemblée Génerale de l'UGGI a
                      Helsinki, 1960",
      title        = "The Present Extent of the Astro - geodetic Geoid and the
                      Geodetic World Datum Derived from it  ",
      year         = "1960",
      note         = "1 sv., For presentation to the",
}