@misc{indiciae63df838068c0,
  title = {Four puzzles about life.},
  author = {M A Bedau},
  year = {1998},
  doi = {10.1162/106454698568486},
  url = {https://pubmed.ncbi.nlm.nih.gov/9847420/},
  note = {Source identifier: 9847420}
}