“A Nominally Second-Order Cell-Centered Finite Volume Scheme for Simulating Three-Dimensional Anisotropic Diffusion Equations on Unstructured Grids”. Communications in Computational Physics 16, no. 4 (October 8, 2014): 841–891. Accessed December 5, 2025. https://www.global-sci.com/index.php/cicp/article/view/6233.