Zawieska, Jakub. “Analysis of External Costs of Transport Within the Scope of Emissions of Air Pollution and Noise”. Roads and Bridges – Drogi i Mosty 14, no. 3 (October 16, 2015): 219–236. Accessed May 1, 2025. https://www.rabdim.pl/index.php/rb/article/view/v14n3p219.