@misc{indiciae9eb4ccc1c59d,
  title = {Mechanisms subserving surface and border brightness contrast.},
  author = {G A Fry},
  year = {1973},
  doi = {10.1097/00006324-197301000-00004},
  url = {https://pubmed.ncbi.nlm.nih.gov/4509735/},
  note = {Source identifier: 4509735}
}