Roland Iosif Moraru (2013). STUDY OF METHANE FLOW IN CAVED GOAFS ADJACENT TO LONGWALL FACES IN VALEA JIULUI COAL BASIN. SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 13th SGEM GeoConference on SCIENCE AND TECHNOLOGIES IN GEOLOGY, EXPLORATION AND MINING. https://doi.org/10.5593/sgem2013/ba1.v1/s03.067