@misc{indiciae438f0852e395,
  title = {Foveal increment thresholds for multiple flashes.},
  author = {R M Herrick},
  year = {1973},
  doi = {10.1364/josa.63.000870},
  url = {https://pubmed.ncbi.nlm.nih.gov/4717146/},
  note = {Source identifier: 4717146}
}