Curdt, W.; Keller, H.-U.: Large dust particles along the Giotto trajectory. Icarus 86, S. 305 - 313 (1990)

Haldoupis, C.; Nielsen, E.; Schlegel, K.: Dependence of radar auroral scattering cross section on the ambient electron density and the destabilizing electric field. Annales Geophysicae 8, S. 195 - 212 (1990)

Hartogh, P.; Hartmann, G. K.: A high-resolution chirp transform spectrometer for microwave measurements. Meas. Sci. Technol. (1), S. 592 - 595 (1990)

Kofman, W.; Nielsen, E.: STARE and EISCAT measurements: Evidence for the Limitation of the STARE observations by ion-acoustic velocity. Journal Geophysical Research 95, S. 19131 (1990)

Markiewicz, W. J.; Drury, L. O. C.; Völk, H. J.: Diffuse particle acceleration in spherically symmetric shock waves: supernova remnant origin of cosmic rays. Astronomy and Astrophysics 236, S. 487 - 502 (1990)

Nielsen, E.; Craven, J. D.; Frank, L. A.; Heelis, R. A.: Ionospheric flows associated with a transpolar arc. Journal Geophysical Research 95, S. 21169 (1990)

Rosenbauer, H.; Shutte, N.; Apathy, I.; Verigin, M.; Witte, M.; Galeev, A.; Gringauz, K.; Grünwaldt, H.; Jockers, K.; Kiraly, P. et al.; Kotova, G.; Livi, S.; Marsch, E.; Remizov, A.; Richter, A.; Riedler, W.; Szego, K.; Hemmerich, P.; Schwenn, R.; Schwingenschuh, K.; Steller, M.: First meansurements of ions of Martian origin and observation of a plasma layer in the magnetosphere of Mars: the TAUS experiment on the spacecraft PHOBOS 2. Sov. Astron. Letter 16, S. 156 - 160 (1990)

Rosenbauer, H.; Shutte, N.; Apathy, I.; Verigin, M.; Witte, M.; Galeev, A.; Gringauz, K.; Grünwaldt, H.; Jockers, K.; Kiraly, P. et al.; Kotova, G.; Livi, S.; Marsch, E.; Remizov, A.; Richter, A.; Riedler, W.; Szego, K.; Hemmerich, P.; Schwenn, R.; Schwingenschuh, K.; Steller, M.: Evidence of a plasmasheet in the Martian magnetotail based on the TAUS experiment data from the `Phobos-2' spacecraft. Pis'ma v Astronomicheskie Zhurnal 16, S. 368 - 377 (1990)

Schoute-Vanneck, H.; Scourlield, M. W. J.; Nielsen, E.: Drifting black aurora? Journal Geophysical Research 95, S. 241 (1990)

Sutcliffe, P. R.; Nielsen, E.: STARE observations of Pi2 pulsations. Journal Geophysical Research 17, S. 603 (1990)

Woch, J.; Kremser, G.; Korth, A.: A comprehensive investigation of compressional ULF waves observed in the ring current. Journal Geophysical Research 95, S. 15113 (1990)

Drury, L. O. C.; Markiewicz, W. J.; Völk, H. J.: Simplified models for the evolution of supernova remnants including particle acceleration. Astronomy and Astrophysics 225, S. 179 - 191 (1989)

Haldoupis, C.; Nielsen, E.: 140 MHz auroral backscatter: evidence for characteristic phase acoustic speed. Geophysical Research Letters 16, S. 723 (1989)

Haldoupis, C.; Nielsen, E.: Very large phase velocities of non two-stream, meter scale irregularities in the high latitude E region ionosphere. Journal Geophysical Research 94, S. 13489 (1989)

Kustov, A.; Uspensky, M.; Kangas, J.; Huuskonen, A.; Nielsen, E.: On the threshold electric field for a 1-m auroral irregularity kapearance. Journal Geophysical Research 94, S. 12043 (1989)

Opgenoorth, H. J.; Bromage, B.; Fontaine, D.; La Hoz, C.; Huuskonen, A.; Kohl, H.; Lovhaug, U.-P.; Wannberg, G.; Gustafsson, G.; Murphre, J. S. et al.; Eliasson, L.; Marklund, G.; Potemra, T. A.; Kirkowood, S.; Nielsen, E.; Wahlund, J. E.: Coordinated observations with EISCAT and the Viking satellite: The decay of a westward travelling surge. Annales Geophysicae 7, S. 479 - 500 (1989)

Rosenbauer, H.; Shutte, N.; Apathy, I.; Galeev, A.; Gringauz, K.; Grünwaldt, H.; Hemmerich, P.; Jockers, K.; Kiraly, P.; Kotova, G. et al.; Livi, S.; Marsch, E.; Richter, A.; Riedler, E.; Remizov, T.; Schwenn, R.; Schwingenschuh, K.; Steller, M.; Szegö, K.; Verigin, M.; Witte, M.: Ions of Martian origin and plasma sheet in the Martian magnetosphere: Initial results of the TAUS experiment. Nature 341, S. 612 - 614 (1989)

Uspensky, M. V.; Kustov, A. V.; Williams, P. J. S.; Huuskonen, A.; Kangas, J.; Nielsen, E.: Effects of unresolved electrojet microstructure on measurements of irregularity drift velocity in auroral radar backscatter. Advances in Space Research 9, S. 5119 (1989)

Curdt, W.; Wilhelm, K.; Craubner, A.; Krahn, E.; Keller, H.-U.: Position of comet P/Halley at the Giotto encounter. Astronomy and Astrophysics 191, S. 1 - 3 (1988)

Keller, H. U.; Kramm, R.; Thomas, N.: Surface features on the nucleus of comet Halley. Nature 331 (6153), S. 227 - 231 (1988)