Dung, Dao Van, and Le Kha Hoa. “Solving Nonlinear Stability Problem of Imperfect Functionally Graded Circular Cylindrical Shells under Axial Compression by Galerkin’s Method”. Vietnam Journal of Mechanics 34, no. 3 (September 4, 2012): 139–156. Accessed December 5, 2025. https://vjs.ac.vn/vjmech/article/view/2356.