Zagorodnyaya, A.N. 2018. “Slime from Sulfuric Acid Shop of Balkhash Copper-Smelting Factory – Alternative Source for Production of Selenium at the Enterprise. Review”. Kompleksnoe Ispolzovanie Mineralnogo Syra = Complex Use of Mineral Resources 307 (4):46-55. https://doi.org/10.31643/2018/6445.29.