Gawęcki, Andrzej, and Barbara Janińska. “Computer Analysis of Slackened-Elastic-Plastic Beams under Non-Proportional Loads”. Computer Assisted Methods in Engineering and Science 2, no. 1 (August 31, 2023): 25–40. Accessed January 12, 2025. https://cames3.ippt.pan.pl/index.php/cames/article/view/1512.