John Tolentino and  Yong Seok Park,  Modeling and Analysis of a Cycling Prosthetic.   journal   = {International Journal of Biomedical and Biological Engineering}, [online]. World Academy of Science, Engineering and Technology.
    April 2020, vol. 161(5). 129 - 134
    [viewed 12 August 2020]. Available from: https://publications.waset.org/pdf/10011219.