Amin, M.H.I., K. Hudha, N.H. Amer, Z. Abd Kadir, and A. Faiz. 2015. “Modelling and Control of Seven DOF Ride Model Using Hybrid Controller Optimized By Particle Swarm Optimization”. Journal of Engineering and Technology (JET) 6 (2):121-42. https://jet.utem.edu.my/jet/article/view/524.