1. A. Aksay and J. A. Pask, J. Amer. Ceram. Soc.
58 (1975) 507.
2. H. Schneider and E. Eberhard, ibid.
73 (1990) 2073
3. S. Kanzaki, T. Kumazawa, J. Asaumi, O. Abe and H. Tabata, J. Ceram. Soc. Jpn
93 (1985) 407.
4. H. Suzuki, H. Saito, Y. Tomokiyo, Y. Suyama, in “Ceramic Transactions, Vol. 6 Mullite and Mullite Matrix Composites”, edited by S. Somiya, R. F. Davis and J. A. Pask (The American Ceramic Society, Westerville, OH, 1990) p. 263.
5. O. Sakurai, N. Mizutani and M. Kato, J. Ceram. Soc. Jpn
96 (1988) 639.