@misc{indiciae73fdbd2b524e,
  title = {Heart rate dynamics during human sleep.},
  author = {C Cajochen and J Pischke and D Aeschbach and A A Borbély},
  year = {1994},
  doi = {10.1016/0031-9384(94)90058-2},
  url = {https://pubmed.ncbi.nlm.nih.gov/8190808/},
  note = {Source identifier: 8190808}
}