@misc{indiciaea9d8f91a2ecf,
  title = {Numerical groundwater-flow model of the Minnelusa and Madison hydrogeologic units in the Rapid City area, South Dakota},
  author = {Larry D. Putnam and Andrew J. Long},
  year = {2009},
  doi = {10.3133/sir20095205},
  url = {https://pubs.usgs.gov/publication/sir20095205},
  note = {Source identifier: sir20095205}
}