@misc{indiciaeda424222d17e,
  title = {A theory for modeling ground-water flow in heterogeneous media},
  author = {Richard L. Cooley},
  year = {2004},
  doi = {10.3133/pp1679},
  url = {https://pubs.usgs.gov/publication/pp1679},
  note = {Source identifier: pp1679}
}