. Eng. Catalin DUMITRESCU, . Eng. Corneliu CRISTESCU, . eng. Gabriela MATACHE. "CONSIDERATIONS REGARDING THE USE OF HYDRAULIC AND PNEUMATIC TRACKERS FOR PHOTOVOLTAIC PANELS TO CONVERT SOLAR ENERGY DIRECTLY INTO ELECTRICAL ENERGY." SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 13th SGEM GeoConference on ENERGY AND CLEAN TECHNOLOGIES (2013): 77 - 84 pp. https://doi.org/10.5593/sgem2013/bd4/s17.010