@misc{indiciae46ed91cac89b,
  title = {Tune without a piper.},
  author = {L W Alvarez},
  year = {1970},
  doi = {10.1038/227534a0},
  url = {https://pubmed.ncbi.nlm.nih.gov/16058033/},
  note = {Source identifier: 16058033}
}