@misc{indiciae246470bbe04a,
  title = {Is Echo a complex adaptive system?},
  author = {R M Smith and M A Bedau},
  year = {2000},
  doi = {10.1162/106365600568248},
  url = {https://pubmed.ncbi.nlm.nih.gov/11130923/},
  note = {Source identifier: 11130923}
}