TY - CPAPER AU - Raluca FARCAS Ph. D Stud AU - Nelu STEFAN Ph. D Stud TI - STUDY ON THE SURFACE INSTABILITY OF THE COAL EXPLOITATION AREA IN LIVEZENI T2 - SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 13th SGEM GeoConference on INFORMATICS, GEOINFORMATICS AND REMOTE SENSING PY - 2013 SP - 427 EP - 434 pp DO - 10.5593/sgem2013/bb2.v2/s09.055 PB - Stef92 Technology ER -