C.A. Balaras, E.G. Dascalaki, K.G. Droutsa, S. Kontoyiannidis, R. Guruz, & G. Gudnason. (2015). Energy and other Key Performance Indicators for Buildings– Examples for Hellenic Buildings. Global Journal of Energy Technology Research Updates, 1(2), 71–89. https://doi.org/10.15377/2409-5818.2014.01.02.2