Ioel Veres. "STUDY ON THE SURFACE INSTABILITY OF THE COAL EXPLOITATION AREA IN LIVEZENI." SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 13th SGEM GeoConference on INFORMATICS, GEOINFORMATICS AND REMOTE SENSING, 2013. https://doi.org/10.5593/sgem2013/bb2.v2/s09.055