TY - CPAPER AU - Sorin Vatavu TI - THE STUDY OF THE INFLUENCE OF THE HYDRO-PNEUMATIC ACCUMULATOR WITHIN THE OPERATION OF HYDRAULIC ASSEMBLIES USED FOR THE SUPPLY OF LONGWALL ROOF SUPPORTS T2 - SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 19th SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings19th, Science and Technologies in Geology, Exploration And Mining PY - 2019 SP - 685 EP - 692 DO - 10.5593/sgem2019/1.3/s03.087 PB - STEF92 Technology ER -