1. K.M. Prewo, J.J. Brennan, and G.K. Layden, Am. Ceram. Soc. Bull., 65, 305–322 (1986).
2. P.J. Lamicq, G.A. Bernhart, M.M. Dauchier, and J.G. Mace, ibid., 65, 336–338 (1986).
3. D.P. Stinton, A. J. Caputo, and R.A. Lowden, ibid., 65, 347–350 (1986).
4. S. Yajima, Handbook of Composites, vol.1 Strong Fibers (North-Holland, Amsterdam 1985 ).
5. M. Sugimoto, T. Shimoo and K. Okamura, 8th Inorganic Polymer Research Meeting, Japan, on November, 1989, pp. 35–36.