Kong , WangHong , ZhenyingYuan , Guangwei and Sheng , Zhiqiang. (2022). Extremum-Preserving Correction of the Nine-Point Scheme for Diffusion Equation on Distorted Meshes.
Advances in Applied Mathematics and Mechanics. 15 (2).
402-427.
doi:10.4208/aamm.OA-2021-0280