1. A. Chatterjee, N.O. Lindfors, J.A. Wester: Ironmaking and Steelmaking, 1976, vol. 3, p. 21
2. D.J. Price: Process Engineering of Pyrometallurgy, M.J. Jones, ed., Institute of Mining and Metallurgy, London, 1974, p. 8
3. N. Standish, Q.L. He: ISIJ Int., 1989, vol. 30, p. 455
4. Q.L. He, N. Standish: ISIJ Int., 1990, vol. 30, p. 305
5. C.K. Lee, J.H. Neilson, and A. Gilchrist: Ironmaking Steelmaking, 1977, No. 6, p. 329