H. Sayyaadi and  N. Shokouhi,  Improvement of Passengers Ride Comfort in Rail Vehicles Equipped with Air Springs.   journal   = {International Journal of Mechanical and Mechatronics Engineering}, [online]. World Academy of Science, Engineering and Technology.
    May 2009, vol. 29(5). 592 - 598
    [viewed 20 April 2024]. Available from: https://publications.waset.org/pdf/8706.