@misc{indiciaeef70193226fa,
  title = {Model for visual luminance discrimination and flicker detection.},
  author = {G Sperling and M M Sondhi},
  year = {1968},
  doi = {10.1364/josa.58.001133},
  url = {https://pubmed.ncbi.nlm.nih.gov/5668364/},
  note = {Source identifier: 5668364}
}