@misc{indiciaeeeb2d7fe2f1c,
  title = {The Bighorn dolomite and correlative formations in Southern Montana and Northern Wyoming},
  author = {Paul W. Richards and C.L. Nieschmidt},
  year = {1961},
  doi = {10.3133/om202},
  url = {https://pubs.usgs.gov/publication/om202},
  note = {Source identifier: om202}
}