@misc{indiciaed1c43bc5c6d7,
  title = {Global exploration and production capacity for platinum-group metals from 1995 through 2015},
  author = {David R. Wilburn},
  year = {2012},
  doi = {10.3133/sir20125164},
  url = {https://pubs.usgs.gov/publication/sir20125164},
  note = {Source identifier: sir20125164}
}