@misc{indiciae14cafa099cd3,
  title = {A PHOTOMETRIC SYSTEM FOR AUTOMATICALLY READING CONCENTRATION.},
  author = {D K MCKAY and D SELIGSON and W R JEWETT},
  year = {1964},
  url = {https://pubmed.ncbi.nlm.nih.gov/14228270/},
  note = {Source identifier: 14228270}
}