Edwards, M. G., & Zheng, H. (2011). Quasi M-Matrix Multifamily Continuous Darcy-Flux Approximations with Full Pressure Support on Structured and Unstructured Grids in Three Dimensions. SIAM Journal on Scientific Computing, 33(2), pp. 455-487. doi:10.1137/080745390

Edwards, Michael G., and Hongwen Zheng. "Quasi M-Matrix Multifamily Continuous Darcy-Flux Approximations With Full Pressure Support On Structured and Unstructured Grids in Three Dimensions." SIAM Journal On Scientific Computing 33, no. 2 (2011): 455-487.

Edwards, Michael G., and Hongwen Zheng. "Quasi M-Matrix Multifamily Continuous Darcy-Flux Approximations With Full Pressure Support On Structured and Unstructured Grids in Three Dimensions." SIAM Journal On Scientific Computing 33.2 (2011): 455-487.