Parveen K. Saini and  Mayank Kushwaha,  Stress Variation around a Circular Hole in Functionally Graded Plate under Bending.   journal   = {International Journal of Mechanical and Mechatronics Engineering}, [online]. World Academy of Science, Engineering and Technology.
    February 2014, vol. 87(3). 538 - 542
    [viewed 11 May 2024]. Available from: https://publications.waset.org/pdf/9997653.