@misc{indiciae7832f22da9e4,
  title = {Bibliography of the metals of the platinum group: Platinum, palladium, iridium, rhodium, osmium, ruthenium, 1748-1917},
  author = {James Lewis Howe and Hendrick Coenraad Holtz},
  year = {1919},
  doi = {10.3133/b694},
  url = {https://pubs.usgs.gov/publication/b694},
  note = {Source identifier: b694}
}