1. “Plasma Propulsion Devices for Space Flight,”;Camac;IRE Transactions on Military Electronics,1959
2. Patrick, R. M., “A Description of a Propulsion Device which Employs a Magnetic Field as the Driving Force,” presented at Second Annual AFOSR Astronautics Symposium, Denver, Colo., April, 1958.
3. Janes, G. S., and Koritz, H. E., “Numerical Calculation of Absolute Bremsstrahlung Intensity For a Fully Ionized Fully Dissociated Hydrogenic Gas, lf Avco-Everett Research Laboratory, Research Report 70, September, 1959.
4. Unpublished Calculations by Bernard T. Feld (MIT, Dept. of Physics).
5. “Physics of Fully Ionized Gases;Spitzer;Interscience Tracts on Physics and Astronomy,1956