Bordascorres, S. P. A., Nguyen-Dang, H., Phan-Phuong, Q., Nguyen-Xuan, H., Natarajan, S. and Duflot, M. (2009) “Smoothed finite element method for two-dimensional elasto-plasticity”, Vietnam Journal of Mechanics. Hanoi, Vietnam, 31(3-4), pp. 293 –. doi: 10.15625/0866-7136/31/3-4/5655.