KHIEM, Nguyen Tien; MAI, Dao Nhu. Natural frequency analysis of cracked beam. <b>Vietnam Journal of Mechanics</b>, Hanoi, Vietnam, v. 19, n. 2, p. 28–38, 1997. DOI: 10.15625/0866-7136/10052. Disponível em: https://vjmech.vast.vn/vjmech/article/view/10052. Acesso em: 9 nov. 2025.