1. A. E. Kunen and W. McIlroy, “The electromagnetic pinch effect in space propulsion,” in theProceedings of the Third Biennial Gas Dynamics Symposium on Dynamics of Conducting Gases(Northwestern University Press, Evanston, Illinois, 1960).
2. W. H. Bostick, “Plasma motors,” inConference on Extremely High Temperatures(John Wiley & Sons, Inc., New York, 1958).
3. S. W. Kash, “Efficiency considerations in electrical propulsion,” inPlasma Acceleration, edited by S. W. Kash (Stanford University Press, Stanford, California, 1960).
4. A. Schock, “Electromagnetic acceleration of plasma for space propulsion,” inProceedings of the Fourth AFBMD∕STL Symposium(Pergamon Press, Ltd., London, 1961), Vol. 2.
5. T. L. Thourson, “Pulsed plasma accelerators,” inSecond Symposium on Advanced Propulsion Concepts(AFOSR-Avco, Boston, Massachusetts, 1959), Vol. 1.