TY  - RPRT
TI  - 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
AU  - David R. Wilburn
PY  - 2012
DO  - 10.3133/sir20125215
UR  - https://pubs.usgs.gov/publication/sir20125215
ID  - sir20125215
ER  -