Son, Nguyen Hoai. “The Error Estimate and the Convergence Rate for H, P - Refinement in the Finite Element Analysis”. <i>Vietnam Journal of Mechanics</i> 30, no. 3 (October 1, 2008): 179 – 184. Accessed November 9, 2025. https://vjmech.vast.vn/vjmech/article/view/5617.