Dosmukhamedov, N., A. Argyn, Zholdasbay Е., and M. Kurmanseitov. “Converting of Copper-Lead Matte: Loss of Gold and Silver With Slag”. Kompleksnoe Ispolzovanie Mineralnogo Syra = Complex Use of Mineral Resources, vol. 314, no. 3, July 2020, pp. 5-14, doi:10.31643/2020/6445.21.