@misc{indiciaedfdef17523e8,
  title = {Instrumentation for sleep research.},
  author = {L C Johnson and P Naitoh},
  year = {1969},
  doi = {10.1037/h0028349},
  url = {https://pubmed.ncbi.nlm.nih.gov/5767574/},
  note = {Source identifier: 5767574}
}