Saxena, Pallavi, and Chirashree Ghosh. “Status of Tropospheric Ozone and Other Primary Air Pollutants After The Implementation of CNG in Delhi”. Asian Journal of Chemistry 22, no. 10 (July 30, 2010): 7498–7506. Accessed July 23, 2024. https://asianpubs.org/index.php/ajchem/article/view/12047.