@misc{indiciae168c3cf4b155,
  title = {Ultimate clocks.},
  author = {W Wayt Gibbs},
  year = {2002},
  doi = {10.1038/scientificamerican0902-86},
  url = {https://pubmed.ncbi.nlm.nih.gov/12197107/},
  note = {Source identifier: 12197107}
}