Radović, N., M. Stanišić, and J. 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, vol. 19, no. 4, Dec. 2023, pp. 1251-62, doi:10.17059/ekon.reg.2023-4-22.