1. 2Szabo, J., Gasdaska, C. Hruby, V, Robin, M. "Bismuth Hall Effect Thruster Development," 2005 JANNAF Propulsion Conference, Monterey, CA, December5-8,2005.
2. 3Szabo,J.,Robin,M.,Duggan,J.,Hofer,R."LightMetalPropellantHallThrusters,"IEPC-2009-138,31stInternational Electric Propulsion Conference,Ann Arbor, Michigan, September 20 -24, 2009.
3. 4Szabo,J.etal."PerformanceEvaluationofanIodineVaporHallThruster,"47thAIAA/ASME/SEA/ASEEJointPropulsion Conference, SanDiego, CA, July31 -Aug 3,2011.
4. 5Jankovsky, R. "NASA's Hall Thruster Program 2002," AIAA-2002-3675, 38th AIAA/ASME/SEA/ASEE Joint Propulsion Conference, Indianapolis, IN, July7-10,2002.