G. Akgun and  I. Algul and  H. Kurtaran,  Nonlinear Static Analysis of Laminated Composite Hollow Beams with Super-Elliptic Cross-Sections.   journal   = {International Journal of Materials and Metallurgical Engineering}, [online]. World Academy of Science, Engineering and Technology.
    July 2017, vol. 128(8). 1467 - 1472
    [viewed 20 January 2022]. Available from: https://publications.waset.org/pdf/10007760.