@misc{indiciaea24d9fa2f764,
  title = {Geochemistry: the clock's second hand.},
  author = {Alex Halliday},
  year = {2004},
  doi = {10.1038/431253a},
  url = {https://pubmed.ncbi.nlm.nih.gov/15372013/},
  note = {Source identifier: 15372013}
}