@misc{indiciae501515c61234,
  title = {Selected references on the geology of the Danforth Hills coal field, Moffat and Rio Blanco counties, Colorado},
  author = {Michael E. Brownfield and E. A. Johnson},
  year = {1984},
  doi = {10.3133/ofr84768},
  url = {https://pubs.usgs.gov/publication/ofr84768},
  note = {Source identifier: ofr84768}
}