@misc{indiciaea28e1be1b9d4,
  title = {Spatial-frequency channels in human vision.},
  author = {M B Sachs and J Nachmias and J G Robson},
  year = {1971},
  doi = {10.1364/josa.61.001176},
  url = {https://pubmed.ncbi.nlm.nih.gov/5121888/},
  note = {Source identifier: 5121888}
}