@misc{indiciae1bf87544abc2,
  title = {Biogenic origin of coalbed gas in the northern Gulf of Mexico Coastal Plain, U.S.A},
  author = {Peter D. Warwick and F. Clayton Breland and Paul C. Hackley},
  year = {2008},
  doi = {10.1016/j.coal.2008.05.009},
  url = {https://pubs.usgs.gov/publication/70000024},
  note = {Source identifier: 70000024}
}