Nguyen Van Tuong and  Premysl Pokorny,  Modeling Concave Globoidal Cam with Swinging Roller Follower : A Case Study.   journal   = {International Journal of Industrial and Manufacturing Engineering}, [online]. World Academy of Science, Engineering and Technology.
    June 2008, vol. 18(6). 776 - 782
    [viewed 21 February 2020]. Available from: https://publications.waset.org/pdf/6975.