N. Balasubramani, K. Ponraj, and S. Prabakar, “NOXEMISSION CONTROL AND ANALYSISOF C.I ENGINE EXHAUSTUSING WATER SPRAY AND SILICA GEL TREATMENT”, Int. j. innov. eng. res. technol., vol. 6, no. 3, pp. 1–5, Mar. 2021, Accessed: Aug. 01, 2025. [Online]. Available: https://repo.ijiert.org/index.php/ijiert/article/view/1791