Pavlović, Ratko. “Solving the Problem of Congestion in City Centers by Applying Congestion Pricing - Simulation in Belgrade”. Journal of Road and Traffic Engineering 68, no. 3 (October 3, 2022): 47-54. Accessed September 21, 2026. https://www.putisaobracaj.rs/index.php/PiS/article/view/252.