1. JANAF Thermochemical Tables, 2nd ed., National Standard Ref. Edition, 1971.
2. D. Sponseller and R. A. Flinn:Trans. TMS-AIME, 1964, vol. 230, pp. 876–88.
3. E. Schurmann, P. Funders, and H. Litterscheidt:Arch. Eisenhuettenwes., 1974, vol. 45, pp. 433–36.
4. E. Schurmann and R. Schmid:Arch. Eisenhuettenwes., 1975, vol. 46, pp. 773–75.
5. D. C. Hilty and J. W. Farrell:Iron Steelmaker, 1975, vol. 52, pp. 17-22 (P rti); pp. 20-27 (P rt 2).