1. Cole, P.M., and Sole, K.C., J. South African Institute of Mining and Metall., 2002, pp. 451–456.
2. Havlik, T., Friedrich, B., and Stopic, S., Erzmetall, 2004, vol. 57, pp. 83–90.
3. Stanforth,R.R., 1991, Patent US5037479.
4. Martin, M., and Wildt, R., An Introduction to Recycling Zinc Coated Steel, Brussels: IZA, 2001.
5. Nagib, S. and Inoue, K., Hydrometallurgy, 2000, vol. 56, pp. 269–292.