@misc{indiciae454de9e3ed20,
  title = {User's documentation for MODFLOW-96, an update to the U.S. Geological Survey modular finite-difference ground-water flow model},
  author = {A.W. Harbaugh and M.G. McDonald},
  year = {1996},
  doi = {10.3133/ofr96485},
  url = {https://pubs.usgs.gov/publication/ofr96485},
  note = {Source identifier: ofr96485}
}