@misc{indiciae6e07221fdac2,
  title = {The Fe-Pb-S system},
  author = {R. Bret and G. Kullerud},
  year = {1967},
  doi = {10.2113/gsecongeo.62.3.354},
  url = {https://pubs.usgs.gov/publication/70221307},
  note = {Source identifier: 70221307}
}