@misc{indiciae3f72727b3a07,
  title = {Geologic controls on thermal maturity patterns in Pennsylvanian coal-bearing rocks in the Appalachian basin},
  author = {Leslie F. Ruppert and James C. Hower and Robert T. Ryder and Jeffrey R. Levine and Michael H. Trippi and William C. Grady},
  year = {2010},
  doi = {10.1016/j.coal.2009.12.008},
  url = {https://pubs.usgs.gov/publication/70193999},
  note = {Source identifier: 70193999}
}