@misc{indiciae674651e26908,
  title = {Illumination box for colour vision tests.},
  author = {L Frisén and A Hedin},
  year = {1972},
  doi = {10.1111/j.1755-3768.1972.tb05978.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/4678269/},
  note = {Source identifier: 4678269}
}