TY - CPAPER AU - Teodor Popescu TI - PARTICULARITIES OF HYDRAULIC DRIVE SYSTEMS FOR LIFTING AND LOWERING OF MEDIUM-POWER WIND TURBINES T2 - SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 19th International Multidisciplinary Scientific GeoConference SGEM2019, Energy and Clean Technologies PY - 2019 SP - 377 EP - 386 DO - 10.5593/sgem2019/4.1/s17.048 PB - STEF92 Technology ER -