Chung, N.V., Him, N.T., Khiem, B.Q. and Tien, P.N. 2021. An effective high-order element for analysis of two-dimensional linear problem using SBFEM. Journal of Science and Technology in Civil Engineering (JSTCE) - HUCE. 15, 3 (Aug. 2021), 109–122. DOI:https://doi.org/10.31814/stce.nuce2021-15(3)-09.