@inproceedings{sgem2019s17022,
  title = {ENERGY FROM RENEWABLE SOURCES FOR IMPROVING ENERGY EFFICIENCY IN HERITAGE HISTORIC BUILDINGS},
  author = {Gheorghe Badea},
  booktitle = {SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 19th International Multidisciplinary Scientific GeoConference SGEM2019, Energy and Clean Technologies},
  year = {2019},
  pages = {169-176},
  publisher = {STEF92 Technology},
  doi = {10.5593/sgem2019/4.1/s17.022}
}