A. Niknejad and  G. H. Liaghat and  A. H. Behravesh and  H. Moslemi Naeini,  Theoretical Investigation of the Instantaneous Folding Force during the First Fold Creation in a Square Column.   journal   = {International Journal of Mechanical and Mechatronics Engineering}, [online]. World Academy of Science, Engineering and Technology.
    October 2008, vol. 22(10). 1105 - 1110
    [viewed 25 April 2024]. Available from: https://publications.waset.org/pdf/6355.