@misc{indiciae043fb1d2a86e,
  title = {Thermal-maturity limit for primary thermogenic-gas generation from humic coals as determined by hydrous pyrolysis},
  author = {Michael Lewan and M.J. Kotarba},
  year = {2014},
  doi = {10.1306/06021413204},
  url = {https://pubs.usgs.gov/publication/70181780},
  note = {Source identifier: 70181780}
}