@misc{indiciae6cf2e5a10fe4,
  title = {Fluorescent spectroscopy, a technique for characterizing surface films},
  author = {Marvin C. Goldberg and David H. Devonald},
  year = {1973},
  url = {https://pubs.usgs.gov/publication/70162052},
  note = {Source identifier: 70162052}
}