1. Hara T, et al. (1997) Advances in Superconductivity IX: p 1331
2. Saga N, et al. (1997) Advances in Superconductivity IX: p 1341
3. Fujikami J, et al. (1996) Advances in Superconductivity VIII: p 1319
4. Hahakura S, et al. to be submitted to Proceedings of ISS ‘97 0.05
5. Saga N, et al. to be submitted to Proceedings of ISS ’97