1. Supersonic Motion of Vacuum Spark Plasmas along Magnetic Fields
2. H. Alfvén, inProceedings of the Second United Nations International Conference on the Peaceful Uses of Atomic Energy, (United Nations, Geneva, 1958), Vol. 31, p. 3.
3. A. Dattner, Fourth International Conference on Ionization Phenomena in Gases (Uppsala 1959).
4. R. M. Patrick, Avco Everett Research Rept. 59 (July, 1959).
5. P. J. Hart, Lockheed Report LMSD-288000 (1959).