@misc{indiciaecd88cf97c630,
  title = {Petroleum geology of the Powder River basin, Wyoming and Montana},
  author = {G.L. Dolton and J. E. Fox and J.L. Clayton},
  year = {1990},
  doi = {10.3133/ofr88450p},
  url = {https://pubs.usgs.gov/publication/ofr88450P},
  note = {Source identifier: ofr88450P}
}