1. Trends in solar cells;AEG/Telefunken,1979
2. Comparison of foldout and rollout solar generators in the multi-kW-range;Alsbach,1976
3. Elektrische Antriebs- und Steuerungssysteme für 24-h-Satelliten;Au;Raketentechnik u. Raumfahrtf,1963
4. An overview of the RIT-10 radiofrequency thruster system;Bassner,1977
5. Development status and application of the electric propulsion system RIT-10 used for station keeping;Bassner,1979