@misc{indiciaef465f603270d,
  title = {Assessment of conventionally recoverable petroleum resources, Volga-Urals Basin, U.S.S.R.},
  author = {Charles D. Masters and James A. Peterson},
  year = {1981},
  doi = {10.3133/ofr811027},
  url = {https://pubs.usgs.gov/publication/ofr811027},
  note = {Source identifier: ofr811027}
}