TY - CPAPER AU - International authors TI - 13th International Multidisciplinary Scientific GeoConference SGEM 2013, Science and Technologies in Geology, Exploration and Mining, Vol. 13, Book 1, Volume 2 T2 - International Multidisciplinary Scientific GeoConference SGEM 2013 PY - 2013 DO - 10.5593/sgem2013/ba1.v2 PB - STEF92 Technology ER -