TY - CPAPER AU - Eugenia Grecu TI - ALTERNATIVE SHALE DRILLING T2 - SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 14th SGEM GeoConference on ECOLOGY, ECONOMICS, EDUCATION AND LEGISLATION PY - 2014 DO - 10.5593/sgem2014/b53/s21.004 PB - Stef92 Technology ER -