@misc{indiciaeb3935e505684,
  title = {Mineral discrimination using a portable ratio-determining radiometer},
  author = {G. Whitney and M. J. Abrams and Alexander F.H. Goetz},
  year = {1983},
  doi = {10.2113/gsecongeo.78.4.688},
  url = {https://pubs.usgs.gov/publication/70011232},
  note = {Source identifier: 70011232}
}