Vidanović, N., Vujanović, M., Ognjanović, S., & Nikolić, D. (2013). Testing of the resistance towards the cutting of the coal mass by the mechanical means on the example of deposit ’Kostolac’. Podzemni Radovi, (23), 59-68. Retrieved from https://ume.rgf.bg.ac.rs/index.php/ume/article/view/51