@article{9961,
      author       = "Lelgemann, D. and International Astronaut. Federation,
                      September 25 - October 1, 1977 XXVIII Congress. IAF - 77 -
                      88",
      title        = "Fundamentals and Design of a Calibration Procedure for High
                      Precision (+ 10 CM) Satellite Altimetry  ",
      year         = "1977",
      note         = "1 sv.",
}