@misc{indiciae78cf08aa448b,
  title = {Identification and significance of accessory minerals from a bituminous coal},
  author = {R. B. Finkelman and R.W. Stanton},
  year = {1978},
  doi = {10.1016/0016-2361(78)90135-7},
  url = {https://pubs.usgs.gov/publication/70012398},
  note = {Source identifier: 70012398}
}