1. C. R. Kennedy and R. B. Poeppel:Interceram, 1970, vol. 27, pp. 221–26.
2. C. R. Kennedy: Fourth Annual Conf. onMaterials for Coal Conversion and Utilization, Gaithersburg, MD, October 9–11, 1979, CONF-791014, pp. K60–K94.
3. J. A. Bonar, C. R. Kennedy, and R. Swaroop:Bull Amer. Ceram. Soc., 1980, vol. 59, pp. 473–78.
4. C. R. Kennedy, R. Swaroop, D. J. Jones, R. J. Fousek, R. B. Poeppel, and D. Stahl: Report No. ANL-78-61, Argonne National Laboratory, Argonne, IL, September 1978, pp. 1–56.
5. E. M. Levin and H. F. McMurdie:Phase Diagrams for Ceramists, 1975 Supplement, p. 280, The American Ceramic Society, Columbus, OH, 1975.