@misc{indiciae2ab433fb8513,
  title = {Visual structures for achromatic color perceptions.},
  author = {H R Flock and S Nusinowitz},
  year = {1984},
  doi = {10.3758/bf03202672},
  url = {https://pubmed.ncbi.nlm.nih.gov/6514521/},
  note = {Source identifier: 6514521}
}