@misc{indiciae7a0c5fd45553,
  title = {Russian PGM-resources for 100+ years},
  author = {Richard M. Levine and David Wilburn},
  year = {2003},
  doi = {10.3133/ofr0359},
  url = {https://pubs.usgs.gov/publication/ofr0359},
  note = {Source identifier: ofr0359}
}