1. Electrical World, 179:51 (1973).
2. R. C. Walker and H. C. Early, Rev. Sei. Instr., 29(11): 1020 (1958).
3. R. Carruthers, in: High Magnetic Fields (H. Kolm, B. Lax, F. Bitter, and R. Mills, eds.), MIT Press, Cambridge, Massachusetts (1962), p. 307.
4. Z. J. J. Stekly, “Magnetic Energy Storage Using Superconducting Coils,” IDA/HQ 63–1412, Proceedings Pulse-Power Conference (February 1963), p. 53.
5. J. Sole, “Stockage D’Energie Possibilites Supraconducteurs En Vue Des Decharges De Grandes Puissances,” Rapport CEA—R3243, Comm. Energie Atomique, Limeil, France (June 1967).