SON, N. Q.; GIANG, N. T. Standard gradient models and crack simulation. Vietnam Journal of Mechanics, Hanoi, Vietnam, v. 33, n. 4, p. 293–301, 2011. DOI: 10.15625/0866-7136/33/4/261. Disponível em: https://vjs.ac.vn/index.php/vjmech/article/view/261. Acesso em: 5 may. 2024.