@misc{indiciaeb35190a5df81,
  title = {Establishment of gold-quartz standard GQS-1},
  author = {Hugh T. Millard and John Marinenko and John E. McLane},
  year = {1969},
  doi = {10.3133/cir598},
  url = {https://pubs.usgs.gov/publication/cir598},
  note = {Source identifier: cir598}
}