@misc{indiciae60776af7858d,
  title = {Documentation of a computer program to estimate the head in a well of finite radius using the U.S. Geological Survey modular finite difference ground-water flow model},
  author = {Michael Planert},
  year = {1997},
  doi = {10.3133/ofr96651a},
  url = {https://pubs.usgs.gov/publication/ofr96651A},
  note = {Source identifier: ofr96651A}
}