TY - CPAPER AU - Gheorghe Badea TI - ENERGY FROM RENEWABLE SOURCES FOR IMPROVING ENERGY EFFICIENCY IN HERITAGE HISTORIC BUILDINGS T2 - SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 19th International Multidisciplinary Scientific GeoConference SGEM2019, Energy and Clean Technologies PY - 2019 SP - 169 EP - 176 DO - 10.5593/sgem2019/4.1/s17.022 PB - STEF92 Technology ER -