J. Boyle and J. Spence, “On the Exact Analysis of the Steady Creep of a Thin Tube Under Combined Loading”, Eng. Trans., vol. 22, no. 3, pp. 411–420, Sep. 1974, Accessed: Jul. 10, 2025. [Online]. Available: https://et.ippt.pan.pl/index.php/et/article/view/2414