@misc{indiciaef2bc2bb63b97,
  title = {Recent strikes in South Africa’s platinum-group metal mines: effects upon world platinum-group metal supplies},
  author = {Thomas R. Yager and Yadira Soto-Viruet and James J. Barry},
  year = {2012},
  doi = {10.3133/ofr20121273},
  url = {https://pubs.usgs.gov/publication/ofr20121273},
  note = {Source identifier: ofr20121273}
}