WASET
    I. Razmi and  N. Choupani,  2D Fracture Analysis of the First Compression Piston Ring.   journal   = {International Journal of Physical and Mathematical Sciences}, [online]. World Academy of Science, Engineering and Technology.
    November 2007, vol. 11(11). 524 - 528
    [viewed 26 April 2024]. Available from: https://publications.waset.org/pdf/6908.