D. Angerman and G. Baustert and R. Galas and Z. H. Zhu (1997). EPOS.P.V3 (Earth Parameter and Orbit System), Software user manual for processing of GPS networks. STR. 97/14

R. Galas and Ch. Reigber and G. Michel (1998). Current Status and Perspectives of the GFZ GPS-Based Volcano Monitoring System. WPGM 1998 (invited paper), EOS supplement

Ch. Reigber and R. Galas and R. König and N. Jakowski and J. Wickert and A. Wehrenpfennig (1998). GFZ and DLR contribution to a GPS ground network to support the CHAMP mission. Proc. of IAG Section II Symp., October 5-9, 1998

Ch. Reigber and D. Angermann and D.Michel and J. Klotz and R. Galas (1999). New Constrains on the distribution of deformation in Central Asia: GPS results covering the Thien Shan, N-Pamirs and Tarim. EUG Newsletter

R. Galas and J. Wickert and W. Burghardt (2001). High Rate Low Latency GPS Ground Tracking Network for CHAMP. Phys. Chem. Earth (A), 649-652.

J. Wickert and R. Galas and G. Beyerle and R. König and Ch. Reigber (2001). GPS Ground Station Data for CHAMP Radio Occultation Measurements. Phys. Chem. Earth (A), 503-511.

J. Wickert and Ch. Reigber and G. Beyerle and R. König and C. Marquardt and T. Schmidt and L. Grunwaldt and R. Galas and T. Meehan and W. Melbourne and K. Hocke (2001). Atmosphere Sounding by GPS Radio Occultation: First results from CHAMP. Geophys. Res. Lett., 3263-3266.

G. Beyerle and J. Wickert and R. Galas and K. Hocke and R. König and C. Marquardt and A.G. Paveljev and Ch. Reigber and T. Schmidt (2001). GPS Occultation Measurements with GPS/MET and CHAMP. U.R.S.I. News

R. Galas and W. Köhler (2001). A binary exchange format for GPS data. Physics and Chemistry of the Earth (A), 645-648.

J. Wickert and T. Schmidt and C. Marquardt and Ch. Reigber and K.-H. Neumayer and G. Beyerle and R. Galas and L. Grunwaldt (2001). PS radio occultation with CHAMP: First results and status of the experiment. Proc. of IAG Scientific Assembly: Vistas for Geodesy in the New Millenium, September 2-7, 2001, Vol. 125, 273-278.

Ch. Reigber and G. Beyerle and R. Galas and L. Grunwaldt and R. Koenig and C. Marquardt and T. K. Meehan and T. Schmidt and J. Wickert and T. P. Yunck (2002). Radio occultation results and lessons learnt from the CHAMP mission. Proc. EUMETSAT Meteorological Satellite Conference, September 2-6 2002

R. König and S. Zhu and C. Reigber and K. H. Neumayer and H. Meixner and R. Galas and G. Baustert and P. Schwintzer (2002). CHAMP rapid orbit determination for GPS atmospheric limb sounding. Advances in Space Research, 289-293.

J. Wickert and R. König and T. Schmidt and Ch. Reigber and N. Jakowski and G. Beyerle and R. Galas and L. Grunwaldt and T.K. Meehan and T.P. Yunck (2003). The radio occultation experiment aboard CHAMP (Part I): Operational data processing, technical aspects, atmospheric excess phase calibration and ionospheric profiling. Proc. International Workshop GPS meteorology, January 13.-17.2003

G. Beyerle and J. Wickert and Ch. Reigber and T. Schmidt and C. Marquardt and R. Galas and L. Grunwaldt, and R. König and T. K. Meehan and T. P. Yunck (2003). The radio occultation experiment aboard CHAMP (PART II): Advanced retrieval techniques in atmospheric soundings and GPS reflectometry. Proc. International Workshop GPS meteorology, January 13.-17.2003

Ch. Reigber and R. Galas and W. Koehler and M. Forberg and M. Ramatschi and J. Wickert (2003). GFZ HR/LL GPS Ground Station Networks and their Use. AGU Fall, December 8-12, 2003