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    Hydrogen Lyman alpha observations

    Keller, H. U. | NTRS | 1976

    CO-driven outbursts

    Keller, H. U. / Kuehrt, E. | British Library Conference Proceedings | 1993

    Summary of discussion of theories

    Huebner, W. F. / Keller, H. U. | British Library Conference Proceedings | 1993

    Indications of a Near Surface Cloud Layer on Venus from Reanalysis of Venera 13/14 Spectrophotometer Data

    Grieger, B. / Ignatiev, N. / Hoekzema, N. et al. | British Library Conference Proceedings | 2004

    UVIS/HDAC Lyman-α observations of the geocorona during Cassini’s Earth swingby compared to model predictions

    Werner, S. / Keller, H. U. / Korth, A. et al. | British Library Conference Proceedings | 2004

    INEO-imaging of near-Earth objects

    Iglseder, H. / Arens-Fischer, W. / Keller, H. U. et al. | British Library Conference Proceedings | 1994

    Optical Properties of the Martian Aerosols in the Visible Spectral Range

    Markiewicz, W. J. / Keller, H. U. / Thomas, N. et al. | British Library Conference Proceedings | 2002

    OSIRIS-The optical, spectroscopic, and infrared remote imaging system for the Rosetta orbiter

    Thomas, N. / Keller, H. U. / Arijs, E. et al. | British Library Conference Proceedings | 1998

    Observations of Martian Aerosols with the Imager for Mars Pathfinder

    Thomas, N. / Keller, H. U. / Markiewicz, W. J. et al. | British Library Conference Proceedings | 1997

    The shape of a sublimating ice surface at the bottom of a non-volatile cylinder: Monte Carlo simulations and 2-D analysis

    Markiewicz, W. J. / Skorov, Y. V. / Keller, H. U. et al. | British Library Conference Proceedings | 1998

    Simulating Titan’s tropospheric circulation with the Portable University Model of the Atmosphere

    Grieger, B. / Segschneider, J. / Keller, H. U. et al. | British Library Conference Proceedings | 2004

    Dawn Discovery mission to Vesta and Ceres: Present status

    Russell, C. T. / Capaccioni, F. / Coradini, A. et al. | British Library Conference Proceedings | 2006

    After the Mars Polar Lander: Where to Next?

    Paige, D. A. / Boynton, W. V. / Crisp, D. et al. | NTRS | 2000

    SMART-1 Mission to the Moon: Technology and Science Goals

    Foing, B. H. / Racca, G. D. / Marini, A. et al. | British Library Conference Proceedings | 2003