@misc{indiciae316c69186195,
  title = {Determination of tellurium and gold in rocks to 1 part per billion},
  author = {John R. Watterson},
  year = {1976},
  doi = {10.3133/ofr76531},
  url = {https://pubs.usgs.gov/publication/ofr76531},
  note = {Source identifier: ofr76531}
}