1. Gravitational Torque on a Satellite Vehicle;Roberson,1958
2. Satellite Librations;Klemperer;Astronautica Acta,1957
3. Gravitational Torque on a Satellite of Arbitrary Shape;Nidley;ARS Journal,1960
4. Generalized Gravity-Gradient Torques;Roberson,1964
5. General Equations of a Satellite in a Gravitational Field;Frick;Rand Corporation Report RM-2527,1959