Kossakowski, Paweł. “The Numerical Modeling of Failure of S235JR Steel Using Gurson-Tvergaard-Needleman Material Model”. Roads and Bridges - Drogi i Mosty 11, no. 4 (April 1, 2012): 295–310. Accessed July 22, 2024. https://rabdim.pl/index.php/rb/article/view/v11n4p295.