Thamer Ali Albahkali,  An Impulse-Momentum Approach to Swing-Up Control of Double Inverted Pendulum on a Cart.   journal   = {International Journal of Mechanical and Mechatronics Engineering}, [online]. World Academy of Science, Engineering and Technology.
    June 2011, vol. 54(6). 1125 - 1131
    [viewed 30 March 2020]. Available from: https://publications.waset.org/pdf/15312.