@misc{indiciaeeab5f15f4171,
  title = {Melatonin possesses time-dependent hypnotic effects.},
  author = {O Tzischinsky and P Lavie},
  year = {1994},
  doi = {10.1093/sleep/17.7.638},
  url = {https://pubmed.ncbi.nlm.nih.gov/7846463/},
  note = {Source identifier: 7846463}
}