Živković Marija, Pereverza Kateryna, Pasichnyi Oleksii, Madžarević Aleksandar, Ivezić Dejan, Kordas Olga. "Exploring scenarios for more sustainable heating: The case of Niš" in Energy no. 115, :Elsevier (2016): 1758-1770. https://doi.org/http://dx.doi.org/10.1016/j.en