@misc{indiciae140c233364dd,
  title = {Three stages and two systems of visual processing.},
  author = {G Sperling},
  year = {1989},
  doi = {10.1163/156856889x00112},
  url = {https://pubmed.ncbi.nlm.nih.gov/2487163/},
  note = {Source identifier: 2487163}
}