Kadir, Sukron, and Zakiyah Amalia. “IoT-Based Exhaust Gas Emission Detection System for Motorized Vehicle”. International Journal of Frontier Technology and Engineering 3, no. 1 (December 30, 2024): 19–29. Accessed September 10, 2025. http://114.6.41.75/index.php/IJFTE/article/view/5675.