Grajçevci, Florim, Armend Mujaj, Driton Kryeziu, Guxim Rrudhani, and Neritan Shkodrani. “Experimental and Numerical Research on the Behavior of Steel Columns With Circular Hollow Cross Sections”. Civil Engineering Journal 10, no. 5 (May 1, 2024): 1577–1588. Accessed September 21, 2025. https://civilejournal.org/index.php/cej/article/view/4937.