@article{21270,
      author       = "Bjerhammar, Arne and XIVth General Assembly of the
                      Association of Geodesy, of the International Union of
                      Geodesy and Geophysis Lucerne, Switzerland, September 25 -
                      October 7, 1967",
      title        = "On a Coalescent World Geodetic System. Part I  ",
      year         = "1967",
      note         = "Tab. a obr. v textu. - 1 sv.",
}