[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: Jan. 17, 2026. [Online]. Available: http://et.ippt.gov.pl/index.php/et/article/view/1728