@misc{indiciaec7da279e0527,
  title = {Giant porphyry-related metal camps of the world— A database},
  author = {Felix E. Mutschler and Steve Ludington and Arthur A. Bookstrom},
  year = {2000},
  doi = {10.3133/ofr99556},
  url = {https://pubs.usgs.gov/publication/ofr99556},
  note = {Source identifier: ofr99556}
}