1. Aukrust, E. and Downing, K. (1991) AISI direct steelmaking program, in 50th Ironmaking Conference, Washington, AIME, pp. 659–663.
2. Bocker, D. and Engelhard, J. (1994) R&D efforts for a continuous development of the lignite industry in Germany, in 10th International Conference on Coal Research, Brisbane, Australia, 9–12 Oct 1994, pp. 121–142.
3. Bystrov, V.P., Fyodorov, A.N., Komkov, A.A. and Sorokin, M.L. (1992) The use of the Vanuykov process for the smelting of various charges, in Proceedings International Conference on Extractive Metallurgy of Gold and Base Metals, Kalgoorlie, Australia, AusIMM, pp. 421–425.
4. Cusack, B.L., Taylor, I.F. and Hardie, G.J. (1994a) The HIsmelt project — Australia. A coal-based direct smelting process, in Proceedings 10th International Conference on Coal Research, Brisbane, Australia, 9–12 October 1994, pp. 71–91.
5. Cusack, B.L., Wingrove, G.S. and Hardie, G.J. (1994b) Initial operation of the HIsmelt research and development facility, in Ironmaking 2000, Mertyle Beach, South Carolina, 2–4 October 1994.