@misc{indiciaeb69db812206b,
  title = {Gravity and magnetic features and their relationship to the geothermal system in southwestern South Dakota},
  author = {T.G. Hildenbrand and R.P. Kucks},
  year = {1981},
  doi = {10.3133/ofr811345},
  url = {https://pubs.usgs.gov/publication/ofr811345},
  note = {Source identifier: ofr811345}
}