Iosif, Dumitrescu, Zeno, Cozma Bogdan, Bogdan, Urdea Gheorghe. "STUDY OF COAL TRANSPORTATION FLOW FROM THE FACE TO THE GROUND IN LONEA MINE." SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 15th International Multidisciplinary Scientific GeoConference SGEM2015, SCIENCE AND TECHNOLOGIES IN GEOLOGY, EXPLORATION AND MINING (2015): 603-610. https://doi.org/10.5593/sgem2015/b13/s3.079