Phung, Viet, Nha Nguyen, and Thien Truong. 2015. “An Improved Radial Point Interpolation Method Applied for Elastic Problem With Functionally Graded Material”. VNUHCM Journal of Science and Technology Development 18 (2), 131-38. https://doi.org/https://doi.org/10.32508/stdj.v18i2.1084.