1. RAYMAN, M. D., and LEHMAN, D. H. “NASA’s First New Millennium Deep-Space Technology Validation Flight,” Paper No. IAA-L-0502, Second IAA International Conference on Low-Cost Planetary Missions, Laurel, Maryland, April 1996.
2. SAUER, C. G. JR. “Optimization of Multiple Target Electric Propulsion Trajectories,” Paper No. 73–205, AIAA 11th Aerospace Sciences Meeting, Washington, D. C., January 1973.
3. WILLIAMS, S. N. “An Introduction to the Use of VARITOP: A General Purpose Low Thrust Trajectory Optimization Program,” JPL Internal Document D-11475, Jet Propulsion Laboratory, Pasadena, California, January 1994.
4. COVERSTONE-CARROLL, V., and WILLIAMS, S. N. “Optimum Low Thrust Trajectories Using Differential Inclusion Concepts,” Journal of the Astronautical Sciences, Vol. 42, No. 4, October–December 1994.
5. RAWLIN, V. K. “Power Throttling the NSTAR Thruster,” Paper No. 95–2515, 31st AIAA/SAE/ASME/ASEE Joint Propulsion Conference and Exhibit, San Diego, California, July 1995.