1. R. E. Kothman and W. A. Stewart, “Transients in Superconducting Solenoids,” Westinghouse Research Report 62–118–283-R4 (October 15, 1962).
2. Z. J. J. Stekly, in Advances in Cryogenic Engineering, Vol. 8, Plenum Press, New York (1963), p. 585.
3. Y. B. Kim, C. F. Hempstead, and A. R. Strnad, Phys. Rev, Letters, 9, 306 (1962).
4. M. S. Lubell, private communication.