@misc{indiciaec4cfb460820a,
  title = {Geologic assessment of undiscovered oil and gas resources: Oligocene Frio and Anahuac Formations, United States Gulf of Mexico coastal plain and State waters},
  author = {Sharon M. Swanson and Alexander W. Karlsen and Brett J. Valentine},
  year = {2013},
  doi = {10.3133/ofr20131257},
  url = {https://pubs.usgs.gov/publication/ofr20131257},
  note = {Source identifier: ofr20131257}
}