@misc{indiciaedf21a61bb1fa,
  title = {New aspects of visual perception thresholds.},
  author = {G A Hay},
  year = {1966},
  doi = {10.1038/2111380a0},
  url = {https://pubmed.ncbi.nlm.nih.gov/5969833/},
  note = {Source identifier: 5969833}
}