Bich, Dao Huy, Vu Hoai Nam, and Nguyen Thi Phuong. “Nonlinear Postbuckling of Eccentrically Stiffened Functionally Graded Plates and Shallow Shells”. Vietnam Journal of Mechanics 33, no. 3 (September 8, 2011): 131–147. Accessed December 7, 2021. https://vjs.ac.vn/index.php/vjmech/article/view/207.