@misc{indiciae4a008eac3553,
  title = {Subsurface geology and porosity distribution, Madison Limestone and underlying formations, Powder River basin, northeastern Wyoming and southeastern Montana and adjacent areas},
  author = {James A. Peterson},
  year = {1978},
  doi = {10.3133/ofr78783},
  url = {https://pubs.usgs.gov/publication/ofr78783},
  note = {Source identifier: ofr78783}
}