@misc{indiciae28ad91f89a6f,
  title = {Assessment of undiscovered conventionally recoverable petroleum resources of the Middle Caspian Basin, U.S.S.R.},
  author = {G. F. Ulmishek and Wyman Harrison},
  year = {1982},
  doi = {10.3133/ofr82296},
  url = {https://pubs.usgs.gov/publication/ofr82296},
  note = {Source identifier: ofr82296}
}