1. L. Spitzer, Jr., “A proposed stellarator,” U.S. Atomic Energy Commission Report No. NYO-993 (PM-S-1) (1951).
2. J. M. Berger and E. A. Frieman, “On the pulse method of ionization and heating of a plasma,” U.S. Atomic Energy Commission Report No. NYO-6043 (PM-S-10) (1953).