Coal reserves in the deposit as a limiting factor for the introducing of mechanised mining technology: Rezerve uglja u ležištu kao ograničavajući faktor uvođenju tehnologija mehanizovanog otkopavanja. (2017). Podzemni Radovi, 23, 21-31. https://ume.rgf.bg.ac.rs/index.php/ume/article/view/48