A. S. ASHOUR, A. A. Rizk and. Free Vibration of Variable Thickness Plates Using Characteristic Orthogonal Polynomial Strip Functions Subjected To Different Combinations of Boundary Conditions. IIUM Engineering Journal, [S. l.], v. 2, n. 1, 2012. DOI: 10.31436/iiumej.v2i1.338. Disponível em: https://journals.iium.edu.my/ejournal/index.php/iiumej/article/view/338. Acesso em: 3 may. 2024.