@misc{indiciae61405caafb5a,
  title = {True checkerboard pattern reversal with light-emitting diodes.},
  author = {C M Epstein},
  year = {1979},
  doi = {10.1016/0013-4694(79)90263-3},
  url = {https://pubmed.ncbi.nlm.nih.gov/91489/},
  note = {Source identifier: 91489}
}