1. B. Rohrman and A.G. Raper:J. Iron Steel Inst., Apr. 1970, pp. 336–41.
2. R. Henley, T. Chubb, and C. Graham:Proc. Inst. Prof. Eng. NZ Ann. Conf., Wellington, New Zealand, 1991, vol. 2, pp. 85–92.
3. J. Goddard and J. Fox:Proc. Conf. Chicago, Extractive Metallurgy for Refractory Materials, TMS-AIME, Warrendale, PA, Feb. 1981, pp. 127–45.
4. M.A. Cagnon and G. Castonguay:Metall. Soc. CIM, 1978, pp. 103–07.
5. Process for the Production of Ferrovanadium Direct from Slag Obtained from Vanadium Containing Pig Iron, U.K. Patent 152547, May 6, 1970.