1. K. H. Jack and W. I. Wilson, “Ceramics Based in the Si-Al-O-N and Related Systems,” Nature Physical Science, 238 (80), 28-29 (1972).
2. I. B. Cutler and W. J. Croft, “Silicon Nitride,” Powder Met. International, 6 (2), 92-94 (3), 143-146 (1974).
3. J. W. Edington, D. J. Rowcliffe and J. L. Henshall, “The Mechanical Properties of Silicon Nitride and Silicon Carbide,” Powder Met. International, 7 (2), 82-86, (3), 136-147 (1975).
4. K. Komeya and H. Inoue, “Synthesis of the a Form of Silicon Nitride from Silica,” J. Mat. Sci., 10, 1243-1246 (1975).
5. J. G. Lee, R. Casarini and I. B. Cutler, “SIALON Derived from Clay to Provide an Enconomical Refractory Material,” Industrial Heating, 43 (4), 50-53 (1976).