@misc{indiciaec3d32250523e,
  title = {Determination of kaolinite in coal by infrared spectroscopy: A comment},
  author = {R. B. Finkelman and F.L. Fiene and P.C. Painter},
  year = {1981},
  doi = {10.1016/0016-2361(81)90170-8},
  url = {https://pubs.usgs.gov/publication/70012059},
  note = {Source identifier: 70012059}
}