WASET
    C. K. Chear and  S. S. Dol,  Vehicle Aerodynamics: Drag Reduction by Surface Dimples.   journal   = {International Journal of Mechanical and Mechatronics Engineering}, [online]. World Academy of Science, Engineering and Technology.
    February 2015, vol. 97(1). 202 - 205
    [viewed 24 April 2024]. Available from: https://publications.waset.org/pdf/10000829.