@misc{indiciaedc643933e7cc,
  title = {Difference limen as a function of retinal eccentricity and background brightness.},
  author = {P M BLOUGH},
  year = {1958},
  doi = {10.1364/josa.48.000731},
  url = {https://pubmed.ncbi.nlm.nih.gov/13576258/},
  note = {Source identifier: 13576258}
}