@misc{indiciaeb2905c46bb2a,
  title = {L-Tryptophan: effects on sleep.},
  author = {E Hartmann},
  year = {1976},
  doi = {10.1159/000399331},
  url = {https://pubmed.ncbi.nlm.nih.gov/790169/},
  note = {Source identifier: 790169}
}