Gudenau, H.W., Senk, D., Babich, A., Fröhling, C., Kueon, O.S., Wang, S. and Wieting, X. 2005. CO2 Problems and waste recycling. Research at the Institute of ferrous metallurgy. Revista de Metalurgia. 41, 2 (Apr. 2005), 139–147. DOI:https://doi.org/10.3989/revmetalm.2005.v41.i2.198.