Byoung Koo Lee, Sang Jin Oh, Guangfan Li. Buckling loads of columns of regular polygon cross-section with constant volume and clamped ends. Electron. J. Struct. Eng. [Internet]. 2002 Jan. 1 [cited 2024 May 19];2:76-84. Available from: https://ejsei.com/EJSE/article/view/26