1. 1) Matsubara, H., Ceramics Japan, Vol. 30, pp.385-394 (1995)
2. 2) Matsubara, H., and Kondo, T., Ceramics Japan, Vol. 30 [6], pp.492-496 (1995)
3. 3) Matsubara, H., Fisher, C., Nomura, H. and Matsumoto, S., Ceramics Japan, Vol. 36 [11], pp.873-879 (2001)
4. 4) Ishida, A., Matsubara, H., Furukawa, K., Miyayama, M. and Yanagida, H., J. Ceram. Soc. Japan, Vol.103 [10], pp. 996-999 (1995)
5. 5) Matsubara, H., Nomura, H., Honda, A. and Matsunaga, K., Ceramic Transactions, Vol. 99, pp.97-106 (1998)