Mujde Turkkan and  Nurkan Yagiz,  Improving Ride Comfort of a Bus Using Fuzzy Logic Controlled Suspension .   journal   = {International Journal of Mechanical and Mechatronics Engineering}, [online]. World Academy of Science, Engineering and Technology.
    March 2014, vol. 88(4). 691 - 694
    [viewed 23 September 2019]. Available from: https://publications.waset.org/pdf/9997955.