Alexandru Rusu. "POSSIBLE APPLICATIONS OF ELORAN SYSTEM FOR POSITIONING AND TIMING SYNCHRONIZATION IN UNDERGROUND MINING." SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 17th International Multidisciplinary Scientific GeoConference SGEM2017, Informatics, Geoinformatics and Remote Sensing, 2017, pp. 451-460. https://doi.org/10.5593/sgem2017/22/s09.057