@misc{indiciaef1b8d8a0161d,
  title = {External time--internal time.},
  author = {Serge Daan and Martha Merrow and Till Roenneberg},
  year = {2002},
  doi = {10.1177/074873002129002375},
  url = {https://pubmed.ncbi.nlm.nih.gov/12002157/},
  note = {Source identifier: 12002157}
}