A New Accurate and Stable Least-Square Method to Compute the Gradient on Non-Orthogonal Meshes

Béchaud, C., Yaqobi, K., Archambeau, F., & Méchitoua, N. (2006). A New Accurate and Stable Least-Square Method to Compute the Gradient on Non-Orthogonal Meshes. In Computational Fluid Dynamics 2004 (pp. 171–176). Springer Berlin Heidelberg. https://doi.org/10.1007/3-540-31801-1_21