Innovative-Tribo-Design of Variable Valve Timing Mechanism: Need and Concept. International Journal of Current Engineering and Technology, [S. l.], v. 5, n. 2, p. 1115–1124, 2015. Disponível em: https://ijcet.evegenis.org/index.php/ijcet/article/view/2481. Acesso em: 12 apr. 2026.