S. F. Wong and  S. S. Dol,  Simulation Study on Vehicle Drag Reduction by Surface Dimples.   journal   = {International Journal of Mechanical and Mechatronics Engineering}, [online]. World Academy of Science, Engineering and Technology.
    February 2016, vol. 111(3). 560 - 565
    [viewed 16 May 2021]. Available from: https://publications.waset.org/pdf/10003966.