1. Z. Yusheng and D. Tung: Proc. Shenyang Int. Symp. on Smelting Reduction, sponsored and organised by the Chinese Society of Metals, Shenyang, People’s Republic of China, Sept. 3–5, 1986, pp. 147–59.
2. M.W. Davies, G.S.F. Hazeldean, and P.N. Smith: in Physical Chemistry of Process Metallurgy: The Richardson Conf., 1973, Institute of Mining and Metallurgy, London, 1974, pp. 95–107.
3. S.V. Shavrin and I.N. Zakharov: Chem. Abstr., 1972, vol. 76, 16853k, pp. 158–159.
4. F. Fun: Metall. Trans., 1970, vol. 1, pp. 2537–41.
5. A. Sato, G. Aragane, K. Kamihara, and S. Yoshimatsu: Trans. Iron Steel Inst. Jpn., 1987, vol. 27, pp. 789–96.