Implementation of Bharat Stage VI norms for small and medium duty CI engines. International Journal of Current Engineering and Technology, [S. l.], v. 1, n. 7.Special Issue, p. 384–388, 2017. Disponível em: https://ijcet.evegenis.org/index.php/ijcet/article/view/4491. Acesso em: 6 may. 2026.