@misc{12094,
  author = {Bj{\o}rn Nielsen and Aslak Tveito},
  title = {A Weighted Output Least Squares Approach to Upscaling of One-Phase Flow in Heterogeneous Reservoirs},
  year = {1997},
  journal = {Presented at Fourth SIAM Conference on Mathematical and Computational Issues in the Geosciences in New Mexico, USA},
  month = {June},
}