@misc{indiciaef37874f84578,
  title = {Outlined elements, regular elements and coincidences in illusory-figure patterns.},
  author = {T E Parks},
  year = {1990},
  doi = {10.1068/p190691},
  url = {https://pubmed.ncbi.nlm.nih.gov/2103001/},
  note = {Source identifier: 2103001}
}