TY - CPAPER AU - FLOAREA, Dacian-Andrei AU - MARIAN, Dacian-Paul AU - ONICA, Ilie AU - E., Cozma TI - NECESSITY OF FOLLOWING UP THE LAND SURFACE DEFORMATION FOR CLOSED MINING AREAS T2 - SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 15th International Multidisciplinary Scientific GeoConference SGEM2015, ECOLOGY, ECONOMICS, EDUCATION AND LEGISLATION PY - 2015 SP - 733 EP - 738 DO - 10.5593/sgem2015/b52/s23.097 PB - Stef92 Technology ER -