@misc{indiciaea23c501aed29,
  title = {Visual perception and xerography.},
  author = {H F Crovitz and H Schiffman},
  year = {1968},
  doi = {10.1126/science.160.3833.1251},
  url = {https://pubmed.ncbi.nlm.nih.gov/5648267/},
  note = {Source identifier: 5648267}
}