@misc{indiciae81fad8ad6053,
  title = {Application of ultraviolet reflectance and stimulated luminescence to the remote detection of natural materials},
  author = {William R. Hemphill},
  year = {1968},
  doi = {10.3133/ofr68126},
  url = {https://pubs.usgs.gov/publication/ofr68126},
  note = {Source identifier: ofr68126}
}