@misc{indiciaee0c671167608,
  title = {A modular finite-element model (MODFE) for areal and axisymmetric ground-water-flow problems; Part 1, Model description and user's manual},
  author = {Lynn J. Torak},
  year = {1992},
  doi = {10.3133/ofr90194},
  url = {https://pubs.usgs.gov/publication/ofr90194},
  note = {Source identifier: ofr90194}
}