I. H. Sheikh, N. Naz, R. Haider, F. Hussain, M. F. Alam, M. Nadeem and M. Arshad (2024) “Contribution to pollution by different types of vehicles based on age and number: Vehicular Pollution based on Age of vehicles”, Pakistan Journal of Science, 76(03), pp. 333–340. doi: 10.57041/vol76iss03pp333-340.