@article {14118, title = {Block-Preconditioned Conjugate-Gradient-Like Methods for Numerical Reservoir Simulation}, journal = {SPE Reservoir EngineeringSPERE}, volume = {3}, year = {1988}, month = {1988/02//}, isbn = {0885-9248}, doi = {10.2118/13534-PA}, url = {http://www.onepetro.org/mslib/servlet/onepetropreview?id=00013534\&soc=SPE}, author = {Eisenstat, Stanley and Elman, Howard and Schlutz, Martin} }