“An Experimental Study on Regulated and Unregulated Pollutants from a Spark Ignition Car Fuelled on Liquefied Petroleum Gas and Gasoline: Pollutants from LPG/Gasoline Cars”, Pakistan Journal of Scientific & Industrial Research, vol. 53, no. 4, pp. 223–229, Jun. 2010, Accessed: Mar. 11, 2026. [Online]. Available: https://www.v2.pjsir.org/index.php/biological-sciences/article/view/463