M. Kurutz, “Modification of the structural tangent stiffness due to nonlinear configuration-dependent conservative loading”, Comp. Assist. Methods Eng. Sci., vol. 3, no. 4, pp. 367–388, Jul. 2023, Accessed: Jun. 29, 2025. [Online]. Available: https://cames.ippt.pan.pl/index.php/cames/article/view/1437