@misc{indiciaee305552be8d3,
  title = {A simple blue filter for the pocket flashlight.},
  author = {G R Hampton},
  year = {1979},
  doi = {10.1016/0002-9394(79)90256-3},
  url = {https://pubmed.ncbi.nlm.nih.gov/443327/},
  note = {Source identifier: 443327}
}