European Latsis Prize 2008 - Professor Simon White "Astrophysics", (2008)

Ritter, H.; Kolb, U.: A catalogue of cataclysmic binaries, low-mass X-ray binaries and related objects - RKcat Edition 7.8, (2008)

Ritter, H.; Kolb, U.: A catalogue of cataclysmic binaries, low-mass X-ray binaries and related objects - RKcat Edition 7.7, (2007)

Downes, R. A.; Webbink, R. F.; Shara, M. M.; Ritter, H.; Kolb, U.; Duerbeck, H. W.: A catalog and atlas of cataclysmic variables: Living editon, (2006)

Ritter, H.; Kolb, U.: A catalogue of cataclysmic binaries, low-mass X-ray binaries and related objects - RKcat Edition 7.6, (2006)

Ritter, H.; Kolb, U.: A catalogue of cataclysmic binaries, low-mass X-ray binaries and related objects - RKcat edition 7.4 and 7.5, (2005)

Ritter, H.; Kolb, U.: Catalogue of cataclysmic binaries, low-mass X-ray binaries and related objects - RKcat Edition 7.3, (2004)

Ehlers, J.: Ein Universalgenie der Wissenschaft, zum hundertsten Todestag des Naturforschers Hermann von Helmholtz, Der Tagesspiegel, S. 27 - 27 (1994)