Pinky Rana, and Mrs. Neetu Sikarwar. “Automatic System for Checking and Controlling Air Pollution in Vehicles”. International Journal of Advances in Scientific Research and Engineering (IJASRE), ISSN:2454-8006, DOI: 10.31695/IJASRE 3, no. 5 (June 26, 2017): 69–75. Accessed July 3, 2024. https://ijasre.net/index.php/ijasre/article/view/341.