Long, Nguyen Van, et al. “Bending and Free Vibration Analysis of Functionally Graded Plates Using New Eight-Unknown Shear Deformation Theory by Finite Element Method”. <i>Vietnam Journal of Science and Technology</i>, vol. 54, no. 3, June 2016, pp. 402-15, doi:10.15625/0866-708X/54/3/7000.