A. Niknejad and  G. H. Liaghat and  A. H. Behravesh and  H. Moslemi Naeini,  Experimental Investigation of the Maximum Axial Force in the Folding Process of Aluminum Square Columns.   journal   = {International Journal of Mechanical and Mechatronics Engineering}, [online]. World Academy of Science, Engineering and Technology.
    April 2009, vol. 28(4). 340 - 344
    [viewed 26 April 2024]. Available from: https://publications.waset.org/pdf/6446.