TY - CPAPER AU - International authors TI - 18th International Multidisciplinary Scientific GeoConference SGEM 2018, Science and Technologies in Geology, Exploration and Mining, Vol. 18, Issue 1.4 T2 - International Multidisciplinary Scientific GeoConference SGEM 2018 PY - 2018 DO - 10.5593/sgem2018/1.4 PB - STEF92 Technology ER -