Romero, M., J. M. Rincón, S. Mûsik, and W. Kozhukharov. “Structural Characterization of High Iron Oxide Content Glasses Obtained from Zinc Hydrometallurgy Wastes”. Revista De Metalurgia, vol. 33, no. 5, Oct. 1997, pp. 317-23, doi:10.3989/revmetalm.1997.v33.i5.844.