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2. Idem., ibid. 7 (1988) 748.
3. J. E. Cassidy, ?High Temperature Chemistry of Inorganic and Ceramic Materials?, edited by F. P. Glasser and P. E. Potter (Chemical Society, London, 1977) pp. 192?203.
4. W. D. Kingery,J. Amer. Ceram. Soc. 33 (1950) 239.
5. H. Kolsky, ?Stress Waves in Solids? (Dover Books, New York, 1963) Ch. 3.