@misc{indiciaea49d1c6a1bdf,
  title = {Characterization of core extracted from the Olmos Formation (Cretaceous), Southwest Texas},
  author = {Alex W. Karlsen and Peter D. Warwick and Robert W. Hook and John R. SanFilipo and Charles E. Barker and Jennifer M. Klein},
  year = {2002},
  doi = {10.3133/ofr02417},
  url = {https://pubs.usgs.gov/publication/ofr02417},
  note = {Source identifier: ofr02417}
}