Dusan Ignjatovic. ENERGY PERFORMANCE OF BELGRADE RESIDENTIAL BUILDINGS   INVESTIGATION, QUANTIFICATION AND IMPROVEMENT POTENTIAL. SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 14th SGEM GeoConference on NANO, BIO AND GREEN   TECHNOLOGIES FOR A SUSTAINABLE FUTURE, 2014. https://doi.org/10.5593/sgem2014/b62/s26.016