1. S. D. Hamann, Physico-Chemical Effects of Pressure, Butterworths, London, 1957.
2. F. W. Vahldiek and C. T. Lynch, pp. 637–64 in Sintering and Related Phenomena, edited by G. C. Kuczynski, N. A. Hooton, and C. F. Gibbon, Gordon and Breach, NY, 1967.
3. J. S. Nadeau, Bull. Amer. Ceram. Soc., 52 [2], 170–74 (1973).
4. A. Sawaoka, K. Kondo, N. Hashimoto, and S. Saito, pp. 339–44 in Factors in Densification and Sintering of Oxide and Non-oxide Ceramics, edited by S. Somiya and S. Saito, Association for Science Documents Information c/o Tokyo Institute of Technology, Tokyo, Japan, 1979.
5. Y. Ishitobi, M. Shimada, and M. Koizumi, pp. 142–51 in ref. 4.