@misc{indiciaef06e26e5ea2b,
  title = {Assessment of conventionally recoverable petroleum resources of the West Siberian Basin and Kara Sea basin, U.S.S.R.},
  author = {Charles D. Masters},
  year = {1981},
  doi = {10.3133/ofr811147},
  url = {https://pubs.usgs.gov/publication/ofr811147},
  note = {Source identifier: ofr811147}
}