@misc{indiciae7b8fca6b46d9,
  title = {Selected reports that include computer programs produced by the US Geological Survey for simulation of ground-water flow and quality},
  author = {C.A. Appel and T. E. Reilly},
  year = {1988},
  doi = {10.3133/wri874271},
  url = {https://pubs.usgs.gov/publication/wri874271},
  note = {Source identifier: wri874271}
}