@misc{indiciae5be57ba399fd,
  title = {L-tryptophan as a physiological hypnotic.},
  author = {E Hartmann},
  year = {1971},
  doi = {10.1016/s0140-6736(71)91254-2},
  url = {https://pubmed.ncbi.nlm.nih.gov/4101310/},
  note = {Source identifier: 4101310}
}