@article{5962,
      author       = "Buchar, E. and XII Assemblée Génerale de l'UGGI a
                      Helsinki, 1960",
      title        = "Determination of some Parameters of the Gtavity Field of
                      the Earth from the Rotation of the Nodal Line of Artificial
                      Satellites  ",
      year         = "1960",
      note         = "1 sv.",
}