1. Iron and Steel Scrap, United Nations, Economic Commission for Europe (UN ECE). 1995. 123NY, Geneva Steel Series
2. Mager, K., Meurer, U., Garcia-Egocheaga, B., Goicoechea, N., Rutten, J., Saage, W. and Simonetti, F. L. 2000. Recovery of zinc oxide from secondary raw mterials: New Developments of the Waeltz Process. 4th International symposium on recycling of metals and engineering materils. 2000. Edited by: Stewart, D. L., Stephens, R. and Daley, J. C. pp.329–344. The Minerals, Metals & Materials Society.
3. Zunkel, A. D. and Schmitt, R. I. 1995. Review of EAFD treatment processes and environmental regulations. Electric Arc Furnace Conference Proceedings. 1995, Pittsburg, PA. pp.147–158. CMT.
4. Iron and Steel Scrap. 1999.United Nations, 141New York, Geneva: Economic Commission for Europe (UN ECE). Steel Series