Pankaj and  Sonia R. Bansal,  Elastic-Plastic Transition in a Thin Rotating Disc with Inclusion.   journal   = {International Journal of Mathematical and Computational Sciences}, [online]. World Academy of Science, Engineering and Technology.
    February 2008, vol. 14(2). 98 - 102
    [viewed 26 February 2020]. Available from: https://publications.waset.org/pdf/9810.