T. Liszkai and J. Farkas, “Minimum cost design of ring and stringer stiffened cylindrical shells”, Comp. Assist. Methods Eng. Sci., vol. 6, no. 3-4, pp. 425–437, May 2023, Accessed: Jun. 30, 2025. [Online]. Available: https://cames.ippt.pan.pl/index.php/cames/article/view/1302