@misc{indiciaeb7780711ea3f,
  title = {Rare-earth elements},
  author = {Bradley S. Van Gosen and Philip L. Verplanck and Robert R. Seal, and Keith R. Long and Joseph Gambogi},
  year = {2017},
  doi = {10.3133/pp1802o},
  url = {https://pubs.usgs.gov/publication/pp1802O},
  note = {Source identifier: pp1802O}
}