Allawi, Mohammed Kadhim, Mohanad Kadhim Mejbel, and Mahmood Hasan Oudah. “Variable Valve Timing (VVT) Modelling by Lotus Engine Simulation Software”. International Journal of Automotive and Mechanical Engineering 17, no. 4 (January 5, 2021): 8397 – 8410. Accessed April 19, 2025. https://journal.ump.edu.my/ijame/article/view/4082.