Walentyński, Ryszard, and Monika Siwek. “Maximisation of Buckling Resistance in Structural Members Made of Circular Hollow Sections”. Computer Assisted Methods in Engineering and Science 27, no. 1 (March 31, 2020): 61–70. Accessed March 5, 2026. https://cames.ippt.gov.pl/index.php/cames/article/view/283.