@misc{indiciae1bad72cc13d8,
  title = {EEG sleep patterns in man: a twin study.},
  author = {P Linkowski and M Kerkhofs and R Hauspie and C Susanne and J Mendlewicz},
  year = {1989},
  doi = {10.1016/0013-4694(89)90106-5},
  url = {https://pubmed.ncbi.nlm.nih.gov/2477214/},
  note = {Source identifier: 2477214}
}