@misc{indiciaee6812dc632b9,
  title = {Mineral Commodity Profiles: Selenium},
  author = {W. C. Butterman and R.D. Brown},
  year = {2004},
  doi = {10.3133/ofr0318},
  url = {https://pubs.usgs.gov/publication/ofr0318},
  note = {Source identifier: ofr0318}
}