Nguyen Trung Kien, Vo Phuong Thuc, Thai Huu Tai, and Nguyen Van Hau. 2014. “A Higher-Order Shear Deformation Theory for Buckling and Free Vibration Analysis of Functionally Graded Sandwich Plates”. Journal of Technical Education Science 9 (3):83-90. https://www.jte.edu.vn/index.php/jte/article/view/566.