TY - CPAPER AU - International authors TI - 12th International Multidisciplinary Scientific GeoConference SGEM 2012, Conference Proceedings, Vol. 12, Volume 2 T2 - International Multidisciplinary Scientific GeoConference SGEM 2012 PY - 2012 DO - 10.5593/sgem2012/v2 PB - STEF92 Technology ER -