Y. Liu, B. Xu, and B. Yang, “On the limit analysis of defective pipelines under complex loadings”, Arch. Mech., vol. 52, no. 4-5, pp. 629–644, Sep. 2000, Accessed: Nov. 19, 2025. [Online]. Available: https://am.ippt.pan.pl/index.php/am/article/view/v52p629