1. R. A. Roy and R. Roy, Mater. Res. Bull.19 (1984) 169.
2. A. Kazakos-Kijowsk, S. Komarneni and R. Roy, in “Better Ceramics Through Chemistry III”, edited by C. J. Brinker, D. E. Clark and D. R. Ulrich, Mater. Res. Soc. Symp. Proc.121 (1988) p. 245.
3. R. Roy, S. Komarneni and D. M. Roy, in “Better Ceramics Through Chemistry”, edited by C. J. Brinker, D. E. Clark and D. R. Ulrich, Mater. Res. Soc. Symp. Proc.32 (1984) p. 347.
4. E. Breval, G. C. Dodds and C. G. Pantano, Mater. Res. Bull.20 (1985) 1191.
5. E. Breval, G. C. Dodds and N. H. Macmillan, ibid.20 (1985) 413.