Stankiewicz, A. and Pamin, J. (2001) “Simulation of instabilities in non-softening Drucker-Prager plasticity”, Computer Assisted Methods in Engineering and Science, 8(1), pp. 183–204. Available at: https://cames.ippt.gov.pl/index.php/cames/article/view/1199 (Accessed: 5 March 2026).