TIEN KHIEM, Nguyen; THANH HAI, Tran. Rayleigh’s quotient for multiple cracked beam and application. <b>Vietnam Journal of Mechanics</b>, Hanoi, Vietnam, v. 33, n. 1, p. 1–12, 2011. DOI: 10.15625/0866-7136/33/1/34. Disponível em: https://vjmech.vast.vn/vjmech/article/view/34. Acesso em: 9 nov. 2025.