@misc{indiciaeea4558f59aef,
  title = {Assessment of undiscovered oil and gas resources of the Azov-Kuban Basin Province, Ukraine and Russia, 2010},
  author = {T. R. Klett},
  year = {2011},
  doi = {10.3133/fs20113052},
  url = {https://pubs.usgs.gov/publication/fs20113052},
  note = {Source identifier: fs20113052}
}