@misc{indiciae37ffdbe98382,
  title = {Self-organizing maps for compositional data: coal combustion products of a Wyoming power plant},
  author = {Josep M. Martin-Fernandez and Mark A. Engle and Leslie F. Ruppert and Ricardo A. Olea},
  year = {2019},
  doi = {10.1007/s00477-019-01659-1},
  url = {https://pubs.usgs.gov/publication/70203013},
  note = {Source identifier: 70203013}
}