@article{21295,
      author       = "Soltau, Gerhard and General Assembly of the International
                      Association of Geodesy, Grenoble, August 18th - 25th, 1975",
      title        = "On the Accuracy of Longitude Determinations Using the
                      VÚGTK-ČSSR Circumzenithal Astrolabe  ",
      year         = "1975",
      note         = "1 sv.",
}