@misc{indiciaea725e921995f,
  title = {Structure of visual perception.},
  author = {J Zhang and S Y Wu},
  year = {1990},
  doi = {10.1073/pnas.87.20.7819},
  url = {https://pubmed.ncbi.nlm.nih.gov/2235999/},
  note = {Source identifier: 2235999}
}