@misc{indiciae9c123cfb7d58,
  title = {An electronic checkerboard pattern generator for vision research.},
  author = {T E Spraker and D W Arnett},
  year = {1977},
  doi = {10.1016/0013-4694(77)90033-5},
  url = {https://pubmed.ncbi.nlm.nih.gov/65262/},
  note = {Source identifier: 65262}
}