@misc{12118, author = {Bj{\o}rn Nielsen and Xing Cai and Aslak Tveito}, title = {A Preconditioner for the Pressure Equation in Reservoir Simulation}, year = {1995}, journal = {Presented at Institut f{\"u}r Mathematik, Johannes Kepler Universit{\"a}t in Linz, Austria}, month = {October}, }