Carbon Monoxide Emission and Engine Noise Analyses of Compressed Natural Gas (CNG) and Petrol-Fueled Automobiles. British Journal of Multidisciplinary and Advanced Studies, [S. l.], v. 6, n. 3, p. 1–8, 2025. Disponível em: https://bjmas.org/index.php/bjmas/article/view/1287. Acesso em: 11 oct. 2025.