Heput, T., E. Ardelean, and I. Kiss. “Some Influences of the Chemical Composition Upon the Viscosity of Synthetic Slags Used in Continuous Steel Casting”. Revista De Metalurgia, vol. 41, no. 3, June 2005, pp. 220-6, doi:10.3989/revmetalm.2005.v41.i3.208.