Kaliszky, Sándor, and János Lógó. “Layout Optimization of Disks by the Use of Rigid-Plastic Element Model”. Computer Assisted Methods in Engineering and Science 9, no. 2 (June 30, 2002): 183–189. Accessed May 8, 2026. http://cames.ippt.gov.pl/index.php/cames/article/view/1128.