TY - CPAPER AU - Mihai Magyari TI - VARIABLE SPEED DRIVES MADE UP OF EXPLOSION PROOF ELECTRIC MOTORS DESIGNED FOR EXPLOSIVE ATMOSPHERES SPECIFIC TO OIL and GAS INDUSTRY T2 - SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 15th International Multidisciplinary Scientific GeoConference SGEM2015, SCIENCE AND TECHNOLOGIES IN GEOLOGY, EXPLORATION AND MINING PY - 2015 DO - 10.5593/sgem2015/b11/s6.107 PB - Stef92 Technology ER -