1. Y. MATSUSAKI, J. FUJIOKA, S. MINAKATA and Y. MIYAMOTO, in “Proceedings of the 1st International Symposium, on FGM”, Sendai, Japan, edited by M. YAMANOUCHI, M. KOIZUMI, T. HIRAI and I. SHIOTA (Tohei Sangyo Co. Ltd., Tokyo, 1990) p. 263.
2. H. KLEMM, K. TANIHATA and Y. MIYAMOTO, in “Proceedings of the 3rd International Conference on HIP, HIP'91, Theory and Applications”, Osaka, Japan, edited by M. KOIZUMI (Elsavier Applied Science, London, 1992).
3. B. GOTTSELIG, E. GYARMATI, A. NAOMIDIS and H. NICKEL, J. Eur. Ceram. Soc.
6 (1990) 153.
4. T. GOTO and T. HIRAI, Mater. Res. Bull.
22 (1987) 1195.
5. Y. MIYAMOTO and M. KOIZUMI, in “Proceedings of the IISS Symposium, Sintering '87” Tokyo, Japan 1987, edited by S. SOMIYA, M. SHIMADA, M. YOSHIMURA and R. WATANABE (Elsevier Press, London, 1987) p. 511.