1. R. Kakuda, NSTAR Flight Validation Report, MOR-602, JPL D-18219, Internal Document, November 1, 1999.
2. J.R. Brophy, et al., Ion Propulsion, Internal JPL Document, presented at the Deep Space 1 Technology Validation Symposium, February 2000.
3. J.E. Polk, et al., In-flight performance of the NSTAR ion thruster technology on the deep space one mission, AIAA-99-2274, presented at the 35th AIAA/ASME/SAE/ASII Joint Propulsion Conference, June 21–23, 1999.
4. J.E. Polk, et al., The effect of engine wear on performance in the NSTAR 8,000-hour ion engine endurance test, AIAA-97-3387, presented at the 33rd Joint Propulsion Conference.
5. J.E. Polk, et al., An overview of the results from an 8,200-hour wear test of the NSTAR ion thruster, AIAA-99-2446, presented at the 35th AIAA/ASME/SAE/ASEE Joint Propulsion Conference, Los Angeles, CA, June 1999.