Phong, Ngo Thanh, Nguyen Thoi Trung, and Nguyen Phu Vinh. “About an Approximate Method to Solve the Static Boundary Value Problems in the Isotropic Hardening Elastic-Plastic Solid”. Vietnam Journal of Mechanics 28, no. 2 (June 7, 2006): 74–82. Accessed April 24, 2024. https://vjs.ac.vn/index.php/vjmech/article/view/5522.