@misc{indiciaeaca5b7768f6c,
  title = {Computer processing of reversible figure perception data [proceedings].},
  author = {M Indra and J Radilová and T Radil-Weiss},
  year = {1977},
  url = {https://pubmed.ncbi.nlm.nih.gov/920086/},
  note = {Source identifier: 920086}
}