@misc{indiciaee83da706b845,
  title = {Paleoecology of the Late Pennsylvanian-age Calhoun coal bed and implications for long-term dynamics of wetland ecosystems},
  author = {Debra A. Willard and T.L. Phillips and Alicia D. Lesnikowska and William A. DiMichele},
  year = {2007},
  doi = {10.1016/j.coal.2006.03.011},
  url = {https://pubs.usgs.gov/publication/70032959},
  note = {Source identifier: 70032959}
}