Przemyslaw Bukowski. "THE ANALYSIS OF SELECTED PROPERTIES OF SOLID ROCK MATERIALS DESIGNED FOR SHAFTS LIQUIDATION." SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 13th SGEM GeoConference on SCIENCE AND TECHNOLOGIES IN GEOLOGY, EXPLORATION AND MINING (2013). https://doi.org/10.5593/sgem2013/ba1.v2/s02.061