@misc{indiciaecfe2941c8480,
  title = {Assessment of coal geology, resources, and reserves in the Montana Powder River Basin},
  author = {Jon E. Haacke and David C. Scott and Lee M. Osmonson and James A. Luppens and Paul E. Pierce and Jay A. Gunderson},
  year = {2013},
  doi = {10.3133/ofr20121113},
  url = {https://pubs.usgs.gov/publication/ofr20121113},
  note = {Source identifier: ofr20121113}
}