Victor Arad (2016). A CORRECTION COEFFICIENT OF MECHANICAL PARAMETERS OF JIU VALLEY COAL OR ROCK TEST SAMPLES. SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 16th International Multidisciplinary Scientific GeoConference SGEM2016, Science and Technologies in Geology, Exploration and Mining. https://doi.org/10.5593/sgem2016/b13/s02.002