@misc{indiciae298c36429800,
  title = {The World Coal Quality Inventory: A status report},
  author = {S.J. Tewalt and J.C. Willett and R. B. Finkelman},
  year = {2005},
  doi = {10.1016/j.coal.2005.02.013},
  url = {https://pubs.usgs.gov/publication/70029555},
  note = {Source identifier: 70029555}
}