1. C. W. Zielke, G. P. Curran, E. Gorin, and G. E. Goring:Ind. Eng. Chem., 1954, vol. 46, pp. 53–56.
2. G. J. W. Kor: U.S. Steel Res. Lab., Monroeville, Pa., unpublished research.
3. E. T. Turkdogan, R. G. Olsson, and J. V. Vinters:Met. Trans., 1971, vol. 2, pp. 3189–96.
4. O. Kubaschewski, E. L. Evans, and C. B. Alcock:Metallurgical Thermochemi- stry, 4th ed., Pergamon Press, Oxford, 1967.
5. W. E. Ranz and W. R. Marshall, Jr.:Chem. Eng. Prog., 1952, vol. 48, pp. 141- 46.