TY - CPAPER AU - Miroslawa Bukowska GIG TI - SPECIFIC ENERGY IN LOADING UPPER CARBONIFEROUS SANDSTONES T2 - SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 16th International Multidisciplinary Scientific GeoConference SGEM2016, Science and Technologies in Geology, Exploration and Mining PY - 2016 SP - 791 EP - 802 DO - 10.5593/sgem2016/b12/s03.102 PB - Stef92 Technology ER -