Angelevska, Beti, Vaska Atanasova, and Igor Andreevski. “Urban Air Quality Guidance Based on Measures Categorization in Road Transport”. Civil Engineering Journal 7, no. 2 (February 1, 2021): 253–267. Accessed January 1, 2026. https://civilejournal.org/index.php/cej/article/view/2634.