@misc{indiciaece8e3c1f8a6b,
  title = {Documentation of finite-difference model for simulation of three-dimensional groundwater flow},
  author = {Peter C. Trescott},
  year = {1975},
  doi = {10.3133/ofr75438},
  url = {https://pubs.usgs.gov/publication/ofr75438},
  note = {Source identifier: ofr75438}
}