@misc{indiciaec1ff03ede53a,
  title = {Djurleite (Cu1.94S) and low chalcocite (Cu2S): New crystal structure studies},
  author = {H. T. Evans},
  year = {1979},
  doi = {10.1126/science.203.4378.356},
  url = {https://pubs.usgs.gov/publication/70012511},
  note = {Source identifier: 70012511}
}