Jiří Machač, Milan Maje. DISINTEGRATION OF COAL AND MINERAL MATERIALS. SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 20th International Multidisciplinary Scientific GeoConference Proceedings SGEM 2020, Science and Technologies in Geology, Exploration And Mining, 2020, pp. 71-80. https://doi.org/10.5593/sgem2020/1.2/s03.010