@misc{indiciae3589e630f5c1,
  title = {Contrast illusions in perspective.},
  author = {N K Humphrey},
  year = {1971},
  doi = {10.1038/232091a0},
  url = {https://pubmed.ncbi.nlm.nih.gov/16062860/},
  note = {Source identifier: 16062860}
}