HIEN, Vu Quoc; THINH, Tran Ich; CUONG, Nguyen Manh; THANH, Pham Ngoc. FREE VIBRATION ANALYSIS OF JOINED COMPOSITE CONICAL-CONICAL-CONICAL SHELLS CONTAINING FLUID. <b>Vietnam Journal of Science and Technology</b>, Hanoi, VN, v. 54, n. 5, p. 650, 2016. DOI: 10.15625/0866-708X/54/5/7684. Disponível em: https://vjs.ac.vn/jst/article/view/7684. Acesso em: 9 jan. 2026.