@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},
}