BODASZEWSKI, W. “Algorithms of the Method of Statically Admissible Discontinuous Stress Fields (SADSF) — Part IV: Integration of Fields Around Nodes into Planar Complex Fields”.
Engineering Transactions 53, no. 2 (June 15, 2005): 119–-131. Accessed July 13, 2025.
https://et.ippt.pan.pl/index.php/et/article/view/435.