1. M. R. Baren and N.A. Gokcen: “Advances in Sulfide Smelting,” H. Y. Sohn, D.B. George, and A.D. Zunkel, eds.,Conference Proceedings, TMS-AIME, 1983, pp. 41–56.
2. M. R. Baren: Ph.D. Thesis, University of Pennsylvania, Philadelphia, PA, 1966.
3. N.A. Gokcen:Trans. AIME, 1956, vol. 206, p. 1558.
4. E. Hala, J. Pick, V. Fried, and O. Vilim:Vapour-Equilibrium, 2nd ed., translated by G. Standart, Pergamon Press, New York, NY, 1967, ch. 4.
5. N. A. Gokcen:Thermodynamics, Techscience Inc., Hawthorne, CA, 1975, ch. 11.