1. DRESNER, L., Cryogenics,,Vol. 33, No. 9, pp. 900–909, (1993).
2. IWASA, Y., Advances in Superconductivity, Vol. 5, pp. 1205–1210, (1992).
3. BELLIS, R.H. and IWASA, Y.,Cryogenics, ,Vol. 34, No. 3, pp. 129–144, (1994).
4. SEOL, S.Y. and HULL, J.R., Cryogenics, ,Vol. 33, No. 10, pp. 966–975, (1993).
5. ANSYS (Engineering Analysis System), SWANSON ANALYSIS SYSTEMS, INC., P.O.Box 65, Houston, PA, 15342, U.S.A.