D. Yambyshev, Farid, and Renat M. Shigabutdinov. “Investigating the Pollution of the Atmosphere by Motor Transport”. International Journal of Engineering & Technology 7, no. 4.7 (September 27, 2018): 231–234. Accessed May 2, 2024. https://sciencepubco.com/index.php/ijet/article/view/20554.