@misc{indiciae495a766812c1,
  title = {Visual pattern interpretable as reversible or figure-background.},
  author = {J Radilová and T Radil-Weiss and J Spunda and M Indra},
  year = {1975},
  url = {https://pubmed.ncbi.nlm.nih.gov/1179983/},
  note = {Source identifier: 1179983}
}