Karbowniczek, M., P. Tuvnes, and T. A. Engh. “FOAMING OF EAF STAINLESS STEEL SLAGS WITH Cr2O3 USING STEELCALTM”. Metallurgy and Foundry Engineering, vol. 34, no. 2, Dec. 2008, p. 93, doi:10.7494/mafe.2008.34.1.93.