@article{20202,
      author       = "Böhme, D. and Potthoff, H. and Wächter, S. and The Fifth
                      COGEOS Workshop May 31 - June 2, 1993, Zaragoza, Spain",
      title        = "New Attempts for Determination of Timed Positions of
                      Geosynchronous Satellites at the Dresden Lohrmann
                      Observatory  ",
      year         = "1993",
}