Minasyan, G. H. “ECOLOGICAL STATE EVALUATION OF MINE FIELD OF THE SOTK GOLD-POLYMETALLIC DEPOSIT”. Proceedings of the YSU C: Geological and Geographical Sciences, vol. 40, no. 3 (211), Oct. 2006, pp. 113-21, doi:10.46991/PYSU:C.2006.40.3.113.