@misc{indiciaeb36c6d4248f2,
  title = {Sleep studies in depression.},
  author = {J Mendels},
  year = {1969},
  doi = {10.1016/0013-4694(69)91228-0},
  url = {https://pubmed.ncbi.nlm.nih.gov/4187278/},
  note = {Source identifier: 4187278}
}