@misc{indiciaee3716007fa39,
  title = {Sleeping problems at 78 degrees north: the Svalbard Study.},
  author = {O Nilssen and R Lipton and T Brenn and G Höyer and E Boiko and A Tkatchev},
  year = {1997},
  doi = {10.1111/j.1600-0447.1997.tb00372.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/9051160/},
  note = {Source identifier: 9051160}
}