1. Propulsion requirements for controllable satellites;Edelbaum;American Rocket Society Journal,1961
2. Sackett L L, Malchow H L, Edelbaum T N. Solar electric geocentric transfer with attitude constraints: analysis. NASA CR-134927, 1975.
3. Very low-thrust trajectory optimization using a direct SQP method;Betts;Journal of Computational & Applied Mathematics,2000
4. Optimization of very-low-thrust, many-revolution spacecraft trajectories;Scheel;Journal of Guidance, Control, and Dynamics,1994
5. Direct approach for computing near-optimal low-thrust earth-orbit transfers;Kluever;Journal of Spacecraft and Rockets,1998