@misc{indiciaeeb0cb5195c03,
  title = {Direct solution algorithm for the two-dimensional ground-water flow model},
  author = {S. P. Larson},
  year = {1978},
  doi = {10.3133/ofr79202},
  url = {https://pubs.usgs.gov/publication/ofr79202},
  note = {Source identifier: ofr79202}
}