Grajçevci, Florim, Armend Mujaj, Driton Kryeziu, Guxim Rrudhani, and Neritan Shkodrani. 2024. “Experimental and Numerical Research on the Behavior of Steel Columns With Circular Hollow Cross Sections”. Civil Engineering Journal 10 (5):1577-88. https://doi.org/10.28991/CEJ-2024-010-05-014.