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A photochemical model of the atmosphere. Max-Planck-Institut für Aeronomie, Katlenburg-Lindau, Germany (1995)
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Spacecraft radar experiment for observations of the interior of a comet in the ROSETTA mission. Max-Planck-Institut für Aeronomie, Katlenburg-Lindau, Germany (1995)
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Thoughts on radio wave experiments for observations of the interior of comets in the international ROSETTA mission. Max-Planck-Institut für Aeronomie, Katlenburg-Lindau, Germany (1995)