@misc{indiciae84b30be9658e,
  title = {The analysis of forms of sulfur in ancient sediments and sedimentary rocks: comments and cautions},
  author = {C. A. Rice and M. L. Tuttle and R. L. Reynolds},
  year = {1993},
  doi = {10.1016/0009-2541(93)90103-p},
  url = {https://pubs.usgs.gov/publication/70017491},
  note = {Source identifier: 70017491}
}