@misc{indiciae09152db33b45,
  title = {An estimate of undiscovered conventional oil and gas resources of the world, 2012},
  author = {Christopher J. Schenk},
  year = {2012},
  doi = {10.3133/fs20123042},
  url = {https://pubs.usgs.gov/publication/fs20123042},
  note = {Source identifier: fs20123042}
}