@misc{indiciaef3200bdd8759,
  title = {Determination of fluorine in organic compounds: Microcombustion method},
  author = {H. S. Clark},
  year = {2002},
  doi = {10.1021/ac60052a032},
  url = {https://pubs.usgs.gov/publication/70011173},
  note = {Source identifier: 70011173}
}