@misc{indiciae8d8076264571,
  title = {U.S. Geological Survey assessments of continuous (unconventional) oil and gas resources, 2000 to 2011},
  author = {U.S. Geological Survey U.S. Continuous Resources Assessment Team},
  year = {2015},
  doi = {10.3133/ds69mm},
  url = {https://pubs.usgs.gov/publication/ds69MM},
  note = {Source identifier: ds69MM}
}