TY - CPAPER AU - Artur Dziedzic TI - THE INFLUENCE OF LOADING SPEED IN THE CLASSICAL BRAZILIAN TESTS ON AN ESTIMATE VALUE OF FRACTURE TOUGHNESS INDICATOR (KIC) FOR EXAMPLE POLISH FLYSCH SANDSTONES T2 - SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 14th SGEM GeoConference on SCIENCE AND TECHNOLOGIES IN GEOLOGY, EXPLORATION AND MINING PY - 2014 DO - 10.5593/sgem2014/b12/s2.118 PB - Stef92 Technology ER -