@misc{indiciaed7772a00a132,
  title = {Qingshankou-Putaohua/Shaertu and Jurassic Coal-Denglouku/Nongan total petroleum systems in the Songliao Basin, China},
  author = {Robert T. Ryder and Jin Qiang and Peter J. McCabe and Vito F. Nuccio and Felix M. Persits},
  year = {2003},
  doi = {10.3133/b2203a},
  url = {https://pubs.usgs.gov/publication/b2203A},
  note = {Source identifier: b2203A}
}