TRAN THANH HAI; VU THI AN NINH; KHIEM, Nguyen Tien. Modal analysis of multistep Timoshenko beam with a number of cracks. <b>Vietnam Journal of Science and Technology</b>, Hanoi, VN, v. 56, n. 6, p. 772–787, 2018. DOI: 10.15625/2525-2518/56/6/12488. Disponível em: https://vjs.ac.vn/jst/article/view/12488. Acesso em: 9 jan. 2026.