@misc{indiciae093a1edbd80e,
  title = {Review of platinum-group metal geochemistry and the major occurrences in the world},
  author = {Norman J. Page and Robert R. Carlson},
  year = {1980},
  doi = {10.3133/ofr8090},
  url = {https://pubs.usgs.gov/publication/ofr8090},
  note = {Source identifier: ofr8090}
}