Cercel, Assit.Constantin, Grofu, Florin (2012). A SIMPLE MONITORING SOLUTION FOR LIGNITE MINING PIT. SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; SGEM2012 12th International Multidisciplinary Scientific GeoConference, 1 - 8 pp. https://doi.org/10.5593/sgem2012/s10.v3001