@misc{indiciae238b86f53001,
  title = {Trace-element budgets in the Ohio/Sunbury shales of Kentucky: Constraints on ocean circulation and primary productivity in the Devonian-Mississippian Appalachian Basin},
  author = {R.B. Perkins and D.Z. Piper and C.E. Mason},
  year = {2008},
  doi = {10.1016/j.palaeo.2008.04.012},
  url = {https://pubs.usgs.gov/publication/70000341},
  note = {Source identifier: 70000341}
}