@misc{indiciae43082cef4baf,
  title = {The De Soto-Red River oil and gas field, Louisiana},
  author = {G.C. Matson and O. B. Hopkins},
  year = {1918},
  doi = {10.3133/b661c},
  url = {https://pubs.usgs.gov/publication/b661C},
  note = {Source identifier: b661C}
}