1. 1) In-Gann Chen, Jianxiong Liu, Yanru Ren, Roy Weinstein, G. Kozlowski, and C.E. Oberly, Appl. Phys. Lett., 62, 3366 (1993).
2. 2) Y. Ren, J. Liu, R. Weinstein, I.G. Chen, D. Parks, J. Xu, V. Obot, and C. Foster, J. Appl. Phys., 74, 718 (1993).
3. 3) R. Weinstein, J. Liu, Y. Ren In-Gann Chen, V. Obot, R.P. Shaw, C. Foster, A. Crapo, Proceedings of International Workshop on Superconductivity, Kyoto, Japan, June 1994.
4. 4) R. Weinstein, Y. Ren, J. Liu, I.G. Chen, and R. Sawh, V. Obot, and C. Foster, Submitted to the Proceedings of the Sixth US/Japan Workshop on High Tc Superconductors, Houston, Texas, Dec. 1993.
5. 5) In-Gann Chen and Roy Weinstein, IEEE Transaction an Applied Superconductivity, 3, 1041 (1993).