@misc{indiciaeb45256d68d06,
  title = {Normal sleep: patterns and mechanisms.},
  author = {E O Bixler and A Vela-Bueno},
  year = {1987},
  doi = {10.1055/s-2008-1041422},
  url = {https://pubmed.ncbi.nlm.nih.gov/3332457/},
  note = {Source identifier: 3332457}
}