1. M. Koizumi, M. Takagi, K. Suganuma, Y. Miyamoto andT. Okamoto, ?High Tech. Ceramics?, VI, CIMTEC, Milan, Italy, 23?27 June (1986).
2. M. Shimada, K. Suganuma, T. Okamoto andM. Koizumi, ?Reactivity of Solids?, edited by P. Barret and L. C. Dufour (Elsevier, Amsterdam, 1985) p. 803?6.
3. M. J. Ramsey andM. H. Lewis,Mater. Sci. Eng. 71 (1985) 113.
4. R. D. Brittain, S. M. Johnson, R. H. Lamoceanx andD. J. Rowcliffe,Amer. Ceram. Soc. 67 (1984) 522.
5. P. F. Becher andS. A. Halen,Amer. Ceram. Soc. Bull. 58 (1979) 582.