Radović, Nikica, Milovan Stanišić, and Jelena Nikolić. “Business Excellence of Eco-Friendly Hotels in the Region of the Western Balkans: Case Study of Eco-Friendly Hotels in Serbia”. Economy of Regions 19, no. 4 (December 19, 2023): 1251–1262. Accessed July 27, 2024. https://economyofregions.org/ojs/index.php/er/article/view/213.