KHIEM, Nguyen Tien. Damage detection of beam by natural frequencies: General theory and procedure. <b>Vietnam Journal of Mechanics</b>, Hanoi, Vietnam, v. 28, n. 2, p. 120–132, 2006. DOI: 10.15625/0866-7136/28/2/5572. Disponível em: https://vjmech.vast.vn/vjmech/article/view/5572. Acesso em: 8 nov. 2025.