@article{8204,
      author       = "Hirsch, O. and Symposium on the Figure of the Earth and
                      Refraction, 14 - 17 March 1967, Vienna",
      title        = "Elektrische Messung des Temperaturgradienten auf
                      astronomischen Beobachtungsstationen  ",
      year         = "1967",
      note         = "1 seš.",
}