Kołakowski, Przemysław, and Jan Holnicki-Szulc. “Optimal Remodelling of Truss Structures (simulation by Virtual Distortions)”. Computer Assisted Methods in Engineering and Science 4, no. 2 (June 30, 1997): 257–281. Accessed April 19, 2026. http://cames.ippt.gov.pl/index.php/cames/article/view/1406.