1. Dynamics and Control of Flexible Space Vehicles;Likins;NASA TR 32-1329, Rev.,1970
2. Nonlinear Systems;Siljak,1969
3. Barbera, F., Ph. D. Dissertation in progress at University of California, Los Angeles.
4. Siljak, Op. cit., pp. 4-51.
5. Skylab Attitude and Pointing Control System;Chubb,1971