@misc{indiciae93e0b1990b9e,
  title = {Modifications of the U.S. Geological Survey modular, finite-difference, ground-water flow model to read and write geographic information system files},
  author = {Leonard L. Orzol and Timothy S. McGrath},
  year = {1992},
  doi = {10.3133/ofr9250},
  url = {https://pubs.usgs.gov/publication/ofr9250},
  note = {Source identifier: ofr9250}
}