1. 1) W. D. Kingery, H. K. Bowen, and D. R. Uhlmann: Introduction to Ceramics (Jhon Wiley & Sons Inc., 1960).
2. 2) R. L. Coble: J. Appl. Phys. 32 (1961) 793.
3. 3) J. E. Burke: A History of the Development of a Science of Sintering, Ceramics and Civilization. Vol. I Ancient Technology to Modern Science. Edited by W. D. Kingery and E. Lense (American Ceramic Society, Columbus, OH, 1984) p.315.
4. 4) R. L. Coble: Am. Ceram. Soc. Bull. 38 (1959) 507.
5. 5) J. Collard, R. C. Duncan, R. J. Pressley, F. Sterzer, and T. Walsh: Interim engineering Rept. no. 3, 16 Apr-15 Jul (1964).