@misc{indiciae1c88345bdc82,
  title = {Whole-coal versus ash basis in coal geochemistry: a mathematical approach to consistent interpretations},
  author = {Nicholas J. Geboy and Mark A. Engle and James C. Hower},
  year = {2013},
  doi = {10.1016/j.coal.2013.02.008},
  url = {https://pubs.usgs.gov/publication/70043515},
  note = {Source identifier: 70043515}
}