Shigeyuki Haruyama and  Oke Oktavianty and  Zefry Darmawan and  Tadayuki Kyoutani and  Ken Kaminishi ,  Study on Energy Absorption Characteristic of Cab Frame with FEM.   journal   = {International Journal of Mechanical and Mechatronics Engineering}, [online]. World Academy of Science, Engineering and Technology.
    February 2016, vol. 111(3). 570 - 576
    [viewed 06 December 2019]. Available from: https://publications.waset.org/pdf/10003972.