1. W. E. Haupin, J. of Metals (Nov. 1991) p28
2. K. Grjotheim, C. Krohn, M. Malinovsky, K. Matiasovsky, and J. Thonstad, A luminium Electrolysis-Fundamentals of the Hall-Heroult Process (Dusseldorf: Aluminium Verlag, 1982)
3. JANAF Thermochemical Tables, 3rd. Edition (Washington D.C.: Am. Chem. Soc, 1986)
4. E.W. Dewing, 13 (4) Canadian Met.Quart (1974) 607
5. Å. Sterten, K. Hamberg, and I. Mæland, Acta Chemica Scandinavia A36 (1982) 392.