Šaponjić, Dušan, and Drazenko Glavic. “EETS, REETS, OPEN BALKANS: Concepts, Regulations, Practical Examples”. Journal of Road and Traffic Engineering 69, no. 3 (September 22, 2023): 27-32. Accessed September 10, 2026. https://putisaobracaj.rs/index.php/PiS/article/view/299.