Grajçevci, Florim Experimental and Numerical Research on the Behavior of Steel Columns with Circular Hollow Cross Sections / aut. Florim Grajçevci, Armend Mujaj, Driton Kryeziu, Guxim Rrudhani, Neritan Shkodrani. Mujaj, Armend. Kryeziu, Driton. Rrudhani, Guxim. Shkodrani, Neritan In: Civil Engineering Journal. -- ISSN 2676-6957. -- Vol. 10, no. 5 (2024), s. 1577-1588.