Erdenebold, U., and W. Jei-Pil. “RECOVERY OF GOLD AND SILVER FROM GOLD MINE TAILINGS”. Journal of Mining and Metallurgy, Section B: Metallurgy, Vol. 55, no. 3, July 2019, pp. 343-9, https://aseestant.ceon.rs/index.php/jmm/article/view/19079.