@misc{indiciaea6b415fb0011,
  title = {Application of organic petrography in North American shale petroleum systems: A review},
  author = {Paul C. Hackley and Brian J. Cardott},
  year = {2016},
  doi = {10.1016/j.coal.2016.06.010},
  url = {https://pubs.usgs.gov/publication/70176207},
  note = {Source identifier: 70176207}
}