Essam A. Al-Bahkali,  Analysis of Different Designed Landing Gears for a Light Aircraft.   journal   = {International Journal of Aerospace and Mechanical Engineering}, [online]. World Academy of Science, Engineering and Technology.
    July 2013, vol. 79(7). 1333 - 1336
    [viewed 28 February 2020]. Available from: https://publications.waset.org/pdf/16265.