@misc{indiciae14764cc71de2,
  title = {Tranquillity or hostility in senescence.},
  author = {C E Llewellyn},
  doi = {10.1016/s0033-3182(68)71834-x},
  url = {https://pubmed.ncbi.nlm.nih.gov/5669977/},
  note = {Source identifier: 5669977}
}