@misc{indiciaeb33df3e25ad2,
  title = {Calorific value and compositional ultimate analysis with a case study of a Texas lignite},
  author = {Ricardo A. Olea and James Luppens and Juan J. Egozcue and Vera Pawlowsky-Glahn},
  year = {2016},
  doi = {10.1016/j.coal.2016.05.005},
  url = {https://pubs.usgs.gov/publication/70199499},
  note = {Source identifier: 70199499}
}