@misc{indiciae318209065448,
  title = {Does brightness contrast really affect the Mueller-Lyer illusion.},
  author = {D L Butler},
  year = {1981},
  doi = {10.2466/pms.1981.52.2.623},
  url = {https://pubmed.ncbi.nlm.nih.gov/7271966/},
  note = {Source identifier: 7271966}
}