@misc{indiciaec516aa20570e,
  title = {Influence of an igneous intrusion on the inorganic geochemistry of a bituminous coal from Pitkin County, Colorado},
  author = {R. B. Finkelman and N. H. Bostick and F.T. Dulong and F. E. Senftle and A. N. Thorpe},
  year = {1998},
  doi = {10.1016/s0166-5162(98)00005-6},
  url = {https://pubs.usgs.gov/publication/70020343},
  note = {Source identifier: 70020343}
}