Bich, Dao Huy, and Vu Do Long. “Non-Linear Dynamical Analysis of Imperfect Functionally Graded Material Shallow Shells”. Vietnam Journal of Mechanics 32, no. 1 (June 1, 2010): 1–14. Accessed November 9, 2025. https://vjmech.vast.vn/vjmech/article/view/312.