Sarbu, Ioan, Valea, Emilian Stefan (2015). IMPROVEMENT OF WATER PUMPING ENERGY EFFICIENCY IN URBAN HEATING STATIONS USING PUMP SPEED CONTROL. SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 15th International Multidisciplinary Scientific GeoConference SGEM2015, ENERGY AND CLEAN TECHNOLOGIES, 307-314. https://doi.org/10.5593/sgem2015/b41/s17.040