Foryś, Iwona, Ewa Putek-Szeląg, and Beata Ziembicka. “Energy Intensity of a Building in the Process of Estimating the Market Value of a Residential Unit”. Economics and Environment 71, no. 4 (December 1, 2019): 16. Accessed May 29, 2025. https://ekonomiaisrodowisko.pl/journal/article/view/61.