@misc{indiciaeff29043eda51,
  title = {Dauerschlaf. A polygraphic study.},
  author = {E Hartmann},
  year = {1968},
  doi = {10.1001/archpsyc.1968.01740010101011},
  url = {https://pubmed.ncbi.nlm.nih.gov/5634693/},
  note = {Source identifier: 5634693}
}