Vu QA, Dung BTL, Nguyen HQ. Shape Functions Development for Beam-Column Element with Semi-Rigid Connections in Second-Order Steel Frame Analysis. Civ Eng J [Internet]. 2025 Jan. 1 [cited 2025 Sep. 20];11(1):369-92. Available from: https://civilejournal.org/index.php/cej/article/view/5481