Lopez, J. E.; Montecinos, S. E.; Hartogh, P.: A photochemical model of the atmosphere. Max-Planck-Institut für Aeronomie, Katlenburg-Lindau, Germany (1995)

Nielsen, E.; Hagfors, T.: Spacecraft radar experiment for observations of the interior of a comet in the ROSETTA mission. Max-Planck-Institut für Aeronomie, Katlenburg-Lindau, Germany (1995)

Nielsen, E.; Hagfors, T.; Kopka, H.; Trilling, D.: 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)