TY  - CPAPER
AU  - Ilie Onica
TI  - IMPROVEMENT OF ECONOMIC EFFICIENCY OF LONGWALL MINING, IN SHORT PANELS, IN THE CASE OF JIU VALLEY THICK COAL SEAMS
T2  - SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; SGEM2011 11th International Multidisciplinary Scientific GeoConference
PY  - 2011
DO  - 10.5593/sgem2011/s03.120
PB  - Stef92 Technology
ER  -