@misc{indiciae24dc2124772f,
  title = {Neutron activation determination of iridium, gold, platinum, and silver in geologic samples},
  author = {Hugh T. Millard},
  year = {1987},
  doi = {10.1007/bf02036054},
  url = {https://pubs.usgs.gov/publication/70015224},
  note = {Source identifier: 70015224}
}