KHIEM, N. T.; TOAN, L. K.; KHUE, N. T. L. Change in mode shape nodes of multiple cracked bar: I. The theoretical study. Vietnam Journal of Mechanics, Hanoi, Vietnam, v. 35, n. 3, p. 175–188, 2013. DOI: 10.15625/0866-7136/35/3/2486. Disponível em: https://vjs.ac.vn/index.php/vjmech/article/view/2486. Acesso em: 29 jan. 2022.