2) T. Hirai: Emergent Process Method for High Technology Ceramics, Materials Science Research Series, vol. 17, ed. by R. F. Davis, H. Palmour III and R. L. Porter, Plenum (1984) p. 329
3) T. Hirai, T. Goto: Proc. 21th Univ. Conf. July 17-19, Pennsylvania State Univ. (1985) in press
4)R, Roy, Proc. 21th Univ. Conf. July 17-19, Pennsylvania State Univ. (1985) inpress