@misc{indiciae202089ab1aae,
  title = {Methodology for quantifying uncertainty in coal assessments with an application to a Texas lignite deposit},
  author = {Ricardo A. Olea and James A. Luppens and Susan J. Tewalt},
  year = {2011},
  doi = {10.1016/j.coal.2010.10.001},
  url = {https://pubs.usgs.gov/publication/70035421},
  note = {Source identifier: 70035421}
}