@misc{indiciaec59633b4ffb4,
  title = {Increment thresholds for two nonidentical flashes.},
  author = {R M Herrick and C J Theisen},
  year = {1972},
  doi = {10.1364/josa.62.000588},
  url = {https://pubmed.ncbi.nlm.nih.gov/5019597/},
  note = {Source identifier: 5019597}
}