[1]
T. Łodygowski, “Numerical Analysis of Beams and Frames with Strain-Softening Materials”, Eng. Trans., vol. 36, no. 3, pp. 471–486, Oct. 1988, Accessed: Jun. 09, 2025. [Online]. Available: https://et3.ippt.pan.pl/index.php/et/article/view/1728