@misc{indiciae4b297894f96a,
  title = {Human sleep during chronic morphine intoxication.},
  author = {D C Kay},
  year = {1975},
  doi = {10.1007/bf00420997},
  url = {https://pubmed.ncbi.nlm.nih.gov/172930/},
  note = {Source identifier: 172930}
}