HUYEN, Nguyen Ngoc; KHIEM, Nguyen Tien. Frequency analysis of cracked functionally graded cantilever beam. <b>Vietnam Journal of Science and Technology</b>, Hanoi, VN, v. 55, n. 2, p. 229–243, 2017. DOI: 10.15625/0866-708X/55/2/8292. Disponível em: https://vjs.ac.vn/jst/article/view/8292. Acesso em: 10 jan. 2026.