@misc{indiciaef3f8aec2713e,
  title = {Total Petroleum Systems of the Carpathian - Balkanian Basin Province of Romania and Bulgaria},
  author = {Mark Pawlewicz},
  year = {2007},
  doi = {10.3133/b2204f},
  url = {https://pubs.usgs.gov/publication/b2204F},
  note = {Source identifier: b2204F}
}