@misc{indiciae1dd4b9450866,
  title = {Human time estimation. A study with special reference to 24-hour synchronized circadian rhythms.},
  author = {G J Stephens and F Halberg},
  year = {1965},
  url = {https://pubmed.ncbi.nlm.nih.gov/5173939/},
  note = {Source identifier: 5173939}
}