@misc{indiciaea0db2a616dc8,
  title = {Chemical analysis and evaluation of 40 samples from Upper Cretaceous coal beds from the Wind River basin, Wyoming},
  author = {R. C. Warlow and L. J. Bragg and J. F. Windolph and N. L. Hickling and J. K. Oman and P.T. Kerry and J.W. Baker},
  year = {1987},
  doi = {10.3133/ofr86187},
  url = {https://pubs.usgs.gov/publication/ofr86187},
  note = {Source identifier: ofr86187}
}