@misc{indiciae780c249ea7a3,
  title = {Carboniferous-Rotliegend total petroleum system; description and assessment results summary},
  author = {Donald L. Gautier},
  year = {2003},
  doi = {10.3133/b2211},
  url = {https://pubs.usgs.gov/publication/b2211},
  note = {Source identifier: b2211}
}