@misc{indiciaeb7a656843778,
  title = {A modular finite-element model (MODFE) for areal and axisymmetric ground-water-flow problems, Part 2: Derivation of finite-element equations and comparisons with analytical solutions},
  author = {Richard L. Cooley},
  year = {1992},
  doi = {10.3133/twri06a4},
  url = {https://pubs.usgs.gov/publication/twri06A4},
  note = {Source identifier: twri06A4}
}