K. T. Zhantasov, Z. M. Altybayev, M. K. Zhantasov, M. M. Yeskendirova, B. A. Lavrov, and L. H. Frangulidi, “The Research of Fluxed Sinter Production with Sufficiently High Strength and Improved Technological Properties”, Eurasian Chem.-Technol. J., vol. 14, no. 4, pp. 351–356, Nov. 2012.