Butt, Muhammad Tahir, Naeem Abbas, Farah Deeba, Javed Iqbal, Naqi Hussain, and Rauf Ahmed Khan. 2018. “Study of Exhaust Emissions from Different Fuels Based Vehicles in Lahore City of Pakistan”. Asian Journal of Chemistry 30 (11):2481-85. https://doi.org/10.14233/ajchem.2018.21484.