@misc{indiciaed17cd0508c74,
  title = {An automatic sleep analyzer.},
  author = {J D Frost},
  year = {1970},
  doi = {10.1016/0013-4694(70)90083-0},
  url = {https://pubmed.ncbi.nlm.nih.gov/4194055/},
  note = {Source identifier: 4194055}
}