Banov M, Ivanov P, Tsolova V, Bech J, Zhyianski M, Blagiev M. RESOLVING OF ENVIRONMENTAL PROBLEMS CAUSED BY THE PROCESSING OF COPPER ORE. BJAS. 2014;20(3):581-589. Accessed October 31, 2026. https://agriacad.eu/ojs/index.php/bjas/article/view/6262