H. AZMAN, A. et al. The Needs to Establish an Integrated Safety System for Express Bus. International Journal of Engineering and Technology, [S. l.], v. 7, n. 4.36, p. 1537–1540, 2018. DOI: 10.14419/ijet.v7i4.36.29367. Disponível em: https://sciencepubco.com/index.php/IJET/article/view/29367.. Acesso em: 12 aug. 2025.