@misc{indiciae27f4e5db2c1f,
  title = {Chemical characterization of gas- and oil-bearing shales by instrumental neutron activation analysis},
  author = {J.K. Frost and R.F. Koszykowski and R.C. Klemm},
  year = {1982},
  doi = {10.1007/bf02516150},
  url = {https://pubs.usgs.gov/publication/70000680},
  note = {Source identifier: 70000680}
}