Kozhakhmetov, S. M., and S. A. Kvyatkovskiy. “Reducing Pyrometallurgical Selection of Particularly Refractory Ledge Gold Ore”. Eurasian Chemico-Technological Journal 19, no. 1 (January 25, 2017): 71–80. Accessed April 26, 2024. https://ect-journal.kz/index.php/ectj/article/view/134.