@misc{indiciae5dc629085abc,
  title = {Reported occurrences of platinum in the U.S.S.R.},
  author = {A. B. Till and N.J. Page},
  year = {1979},
  doi = {10.3133/mf1071},
  url = {https://pubs.usgs.gov/publication/mf1071},
  note = {Source identifier: mf1071}
}