@article{25448,
      author       = "Heiskanen, W. A. and XII Assemblée Génerale de l'UGGI a
                      Helsinki, 1960",
      title        = "Provisional Report on Gravimetric Computation of the Geoid
                      and of the Gravity Anomaly Field and related Quantities in
                      higher Elevations  ",
      year         = "1960",
      note         = "1 sv.",
}