@misc{indiciaec38a0650eea4,
  title = {Error increase and decrease in minimal form of Mueller-Lyer illusion.},
  author = {M R Cooper and R P Runyon},
  year = {1970},
  doi = {10.2466/pms.1970.31.2.535},
  url = {https://pubmed.ncbi.nlm.nih.gov/5492331/},
  note = {Source identifier: 5492331}
}