M. Królak and Z. Kołakowski, “Interactive Elastic Buckling of Thin-Walled Open Orthotropic Beam-Columns”, Eng. Trans., vol. 43, no. 4, pp. 591–602, Dec. 1995, Accessed: Apr. 24, 2025. [Online]. Available: https://et3.ippt.pan.pl/index.php/et/article/view/1519