@misc{indiciae3b7a6e901aed,
  title = {Byproduct metals and rare-earth elements used in the production of light-emitting diodes—Overview of principal sources of supply and material requirements for selected markets},
  author = {David R. Wilburn},
  year = {2012},
  doi = {10.3133/sir20125215},
  url = {https://pubs.usgs.gov/publication/sir20125215},
  note = {Source identifier: sir20125215}
}