@article{1907,
      author       = "International Union of Geodesy and Geophysics - XII General
                      Assembly Helsinki 25 July - 6 August 1960",
      title        = "Application of Low Frequency Phase Comparison Systems to
                      Measurement of Long Geodetic Lines  ",
      year         = "1960",
      note         = "1 sv., 3 tab.",
}