@misc{indiciae998991e0d645,
  title = {Vacuum ultraviolet measurements of reflectance and luminescence from various rock samples},
  author = {H.V. Watts and H.J. Goldman},
  year = {1968},
  doi = {10.3133/ofr68317},
  url = {https://pubs.usgs.gov/publication/ofr68317},
  note = {Source identifier: ofr68317}
}