@misc{indiciaec4b4a57c0ce7,
  title = {Petroleum geology and resources of the West Siberian Basin, Russia},
  author = {Gregory F. Ulmishek},
  year = {2003},
  doi = {10.3133/b2201g},
  url = {https://pubs.usgs.gov/publication/b2201G},
  note = {Source identifier: b2201G}
}