“Testing of the resistance towards the cutting of the coal mass by the mechanical means on the example of deposit ’Kostolac’: Ispitivanje otpora prema rezanju ugljene mase mehaničkim sredstvima na primeru ležišta ’Kostolac’” (2013) Podzemni radovi, (23), pp. 59–68. Available at: https://ume.rgf.bg.ac.rs/index.php/ume/article/view/51 (Accessed: 3 November 2026).