@misc{indiciaeb140f0fcff2d,
  title = {Brightness contrast, illumination intensity and visual efficiency.},
  author = {M A TINKER},
  year = {1959},
  doi = {10.1097/00006324-195905000-00001},
  url = {https://pubmed.ncbi.nlm.nih.gov/13649877/},
  note = {Source identifier: 13649877}
}