DINESCU, R. Kiss. "USING GIS/GPS FOR MONITORING THE CLOSED MINE AREAS." SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 17th International Multidisciplinary Scientific GeoConference SGEM2017, Informatics, Geoinformatics and Remote Sensing (2017): 1113-1118. https://doi.org/10.5593/sgem2017/21/s08.141