1. W. R. Kerslake, J. F. Wasserbauer, and P. M. Margosian,"A Mercury Electron-Bombardment Ion Thrustor Suitable for Station Keeping and A t t i - tude Control," AIM Paper 66-247 (1966)
2. J. R. Anderson and 6. A. Work, "The Capabilities of Microthrust Electric Propulsion:' AIM Propulsion Joint Specialist Conference, New York (1965)
3. S. L. Eilenberg, E. Caplinger, and R. M. Worlock, "Applications and Characteristics of Ian Thrusters in the Micro to Millipound Range ," AIM Paper 66-212 (1966)
4. Technical Documentary Report AFAPL-TR-65-68 J. R. Anderson and S. A. Thompson, "Development and Long-Life Performance of Ion Engines for Satellite Control," AIAA Paper 66-234 (1966)