@misc{indiciae9863dea555a8,
  title = {Documentation of a finite-element two-layer model for simulation of ground-water flow},
  author = {Michael J. Mallory},
  year = {1979},
  doi = {10.3133/wri7918},
  url = {https://pubs.usgs.gov/publication/wri7918},
  note = {Source identifier: wri7918}
}