DONG, Dang Thuy; DUNG, Dao Van. Nonlinear vibration of functionally graded material sandwich doubly curved shallow shells reinforced by FGM stiffeners. Part 1: Governing equations. <b>Vietnam Journal of Mechanics</b>, Hanoi, Vietnam, v. 39, n. 3, p. 245–257, 2017. DOI: 10.15625/0866-7136/9692. Disponível em: https://vjmech.vast.vn/vjmech/article/view/9692. Acesso em: 9 nov. 2025.