Gul, Naveed, and Naila Nazir. “An Investigation into A Socio-Economic Fit Between Vehicular Emissions and Economic Activities: A Case Study of Commercial Vehicles”. iRASD Journal of Economics 5, no. 4 (December 31, 2023): 1096 – 1112. Accessed May 20, 2024. https://journals.internationalrasd.org/index.php/joe/article/view/1905.