@misc{indiciae3e1b89622765,
  title = {Individual differences in sleep patterns.},
  author = {D R Davies},
  year = {1976},
  doi = {10.1136/pgmj.52.603.10},
  url = {https://pubmed.ncbi.nlm.nih.gov/1257168/},
  note = {Source identifier: 1257168}
}