1. Environmental Aspects of Aluminium Smelting, A Technical Review, (1981), UNEP, ISBN 92-807-1014-1.
2. Metal Bulletin, World Steel and Metals News, 23. 9. 1991, London, UK.
3. Metal Bulletin, World Steel and Metals News, 26. 9. 1991, London, UK.
4. ; ; ; , Thonstad Jomar Aluminium Electrolysis, Aluminium-Verlag, Düsseldorf (1982).
5. ; , Aluminium Smelter Technology, Aluminium Verlag, Düsseldorf 1989.