@article{10203,
      author       = "Roelofs, R. and For presentation at the 11th General
                      Assembly of the IGGU Toronto, Canada - September 1957",
      title        = "General Report. Determination of Latitude, Longitude and
                      Azimut 1954 - 1957  ",
      year         = "1957",
      note         = "1 sv.",
}