1. 1) C. N. Cochrun: Metal-Slag-Gas Reactions and Processes, ed. by Z. A. Foroulis and W. W. Smeltzer, Electrochemical Soc., (1975), p. 299.
2. 2) H. Yokokawa, M. Fujishige, M. Dokiya, T. Kameyama, S. Ujiie and K. Fukuda: Trans. Japan Inst. Metals, 23 (1982), 134.
3. 3) G. M. Rosenblatt: Treatise on Solid State Chemistry Vol. 4 Reactivity of Solids, ed. by N. B. Hannay, Plenum, New York, (1976), p. 165.
4. 4) M. Dokiya, M. Fujishige, T. Kameyama, H. Yokokawa, S. Ujiie, K. Fukuda and A. Motoe: Light Metals 1983, ed. by E. M. Adkins Metal. Soc. AIME, New York, (1983), p. 651.
5. 5) M. A. Miller, L. M. Foster and C. D. Baker: U.S. Patent, 2,829,961 (April 8, 1958).