@misc{indiciae8edd6cbede0a,
  title = {Oil shale and nahcolite resources of the Piceance Basin, Colorado},
  author = {U.S. Geological Survey Oil Shale Assessment Team},
  year = {2010},
  doi = {10.3133/dds069y},
  url = {https://pubs.usgs.gov/publication/dds069Y},
  note = {Source identifier: dds069Y}
}