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2. H. W. Meyer, H. F. Ramstand, and W. H. Goodnow:Blast Furnace Theory and Practice, J. H. Strassburger, ed., chapt. XV, Gordon and Breach, New York, 1969.
3. V. Koump: Unpublished research, U.S. Steel Co., Monroeville, PA, 1961, see chapt. XIX of Ref. 2.
4. O. Kubaschewski, E. L. Evans, and C. B. Alcock,Metallurgical Thermochemistry, Pergamon Press, Oxford, U.K., 1967.
5. I. Barin, O. Knacke, and O. Kubaschewski:Thermochemical Properties of Inorganic Substances andSupplement, Springer-Verlag, Berlin, 1973 and 1977.