@misc{indiciae8d218d73fe01,
  title = {Contrast-difference thresholds with sinusoidal gratings.},
  author = {Y Kohayakawa},
  year = {1972},
  doi = {10.1364/josa.62.000584},
  url = {https://pubmed.ncbi.nlm.nih.gov/5019596/},
  note = {Source identifier: 5019596}
}