@misc{indiciae533353114138,
  title = {Quantifying favorableness for occurrence of a mineral deposit type using fuzzy logic; an example from Arizona},
  author = {Mark E. Gettings and Mark W. Bultman},
  year = {1993},
  doi = {10.3133/ofr93392},
  url = {https://pubs.usgs.gov/publication/ofr93392},
  note = {Source identifier: ofr93392}
}