@misc{indiciaea4d219ce9ac6,
  title = {Determination of the \δ 34 S of Total Sulfur in Solids: RSIL Lab Code 1800},
  author = {Kinga Revesz and Tyler B. Coplen},
  year = {2006},
  doi = {10.3133/tm10c4},
  url = {https://pubs.usgs.gov/publication/tm10C4},
  note = {Source identifier: tm10C4}
}