@article{32567,
      author       = "Tziavos, Ilias N. and Vermeer, Martin and Proceedings,
                      Session G7, Europ. Geophys. Soc. XXI Gen. Assembly, The
                      Hague, The Netherlands, 6 - 11 may, 1996",
      title        = "Techniques for local geoid determination  ",
      year         = "1996",
      note         = "1 sv. Obr.a tab. v textu. - Lit. - Abstr.",
}