TY  - CPAPER
AU  - Ficker, Tomas
AU  - Martisek, Dalibor
TI  - SHEAR STRENGTH OF ROCKS BY VISUAL ASSESSMENT
T2  - SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 15th International Multidisciplinary Scientific GeoConference SGEM2015, SCIENCE AND TECHNOLOGIES IN GEOLOGY, EXPLORATION AND MINING
PY  - 2015
SP  - 641
EP  - 648
DO  - 10.5593/sgem2015/b12/s2.085
PB  - Stef92 Technology
ER  -