Tica S, Živanović P, Bajčetić S, Milovanović B, Nađ A. STUDY OF THE FUEL EFFICIENCY AND ECOLOGICAL ASPECTS OF CNG BUSES IN URBAN PUBLIC TRANSPORT IN BELGRADE. JAES [Internet]. 2019 Mar. 18 [cited 2026 Jul. 12];17(1). Available from: https://asistent.ceon.rs/index.php/jaes/article/view/17035