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3. C.N. Cochran, “Alternative Smelting Processes for Aluminum,” Light Metals 1987 (Warrendale, PA: TMS, 1987), pp. 429–443.
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5. K. Grjotheim, H. Kvande, K. Motzfeldt and A. Schei, “Carbo Thermal Production of Aluminium” (Düsseldorf: Al-Verlag, 1989).