Hung, Tran Quang, Tran Minh Tu, and Do Minh Duc. “Geometrically Nonlinear Bending Mesh-Free Analysis of Functionally Graded Porous Sandwich Beam”. The University of Danang - Journal of Science and Technology 21, no. 6.1 (June 30, 2023): 16–21. Accessed July 3, 2024. https://jst-ud.vn/jst-ud/article/view/8359.