“’Borska reka’ ore body, the future of the exploitation in Bor mine: Rudno telo ’Borska Reka’, budućnost eksploatacije u Borskoj jami”, ume, no. 21, pp. 83–88, Dec. 2012, Accessed: Nov. 14, 2026. [Online]. Available: https://ume.rgf.bg.ac.rs/index.php/ume/article/view/65