1. K. Saito:Proc. Savard/Lee Int. Symp. on Bath Smelting, TMS, Montreal, 1992, pp. 579–90.
2. E. Aukrust:Proc. Savard/Lee Int. Symp. on Bath Smelting, TMS, Montreal, 1992, pp. 591–610.
3. T. Ibaraki, M. Kanemoto, S. Ogawa, H. Katayama, and H. Ishikawa:I&SM, 1990, Dec, pp. 30–37.
4. M. Tokuda and S. Kobayashi:Proc. 7th Process Technology Conf., ISS-AIME, Toronto, 1988, pp. 3–11.
5. S. Hara and K. Ogino:Iron Steel Inst. Jpn. Int., 1992, vol. 32, pp. 81–86.