@misc{indiciae0b52bfa1354c,
  title = {Preliminary vitrinite and bitumen reflectance, total organic carbon, and pyrolysis data for samples from Upper and Lower Cretaceous strata, Maverick Basin, south Texas},
  author = {Paul C. Hackley and Kristin O. Dennen and Rachel M. Gesserman and Jennie L. Ridgley},
  year = {2009},
  doi = {10.3133/ofr20091220},
  url = {https://pubs.usgs.gov/publication/ofr20091220},
  note = {Source identifier: ofr20091220}
}