@misc{indiciaeeeff74ad65e5,
  title = {Testing the Fraunhofer line discriminator by sensing fluorescent dye},
  author = {George Eimert Stoertz},
  year = {1969},
  doi = {10.3133/ofr69274},
  url = {https://pubs.usgs.gov/publication/ofr69274},
  note = {Source identifier: ofr69274}
}