@article{27169,
      author       = "Heiskanen, W.A. and 13. valné shromáždění MUGG
                      Berkeley 1963",
      title        = "Report of the Special Study Group 11 of the IAG,
                      Geophysiacal Interpretation of Gravity Anomalies  ",
      note         = "1.4. 1964. - 1 sv.",
}