1. NIST-JANAF Thermochemical Tables, http://kinetics.nist.gov/janaf/ .
2. V.M. Mozhaev, P.A. Polyakov, and L.M. Afanseva: Sov. J. Non-Ferrous Met., 1972, Vol. 13, No. 9, pp.28-29.
3. V.M. Mozhaev, P.A. Polyakov: Izv. Vyssk. Uchebn. Zav, Tsvet. Met., 1980, Vol. 23, No. 5, pp. 37-41.
4. S. Kjelstrup Ratkje: Electrochim. Acta, 1991, Vol. 36, No. 3/4, pp. 661-65.
5. R. Ødegård, S. Julsrud, A. Solheim, and K. Thovsen: Proc. TMS-AIME, Light Met., 1991. pp. 307–13.