Nature: Circadian rhythms. Of owls, larks and alarm clocks. nature.com/news/2009/090311/full/458142a.html.
163
A. Roger Ekirch: Segmented sleep in preindustrial societies. Sleep 2016, PMCID: PMC4763365.
164
Bloomberg: Napping gets a nod at the workplace. bloomberg.com/bw/magazine/content/10_36/b4193084949626.htm.
165
Nicole Lovato et al. The effects of napping on cognitive functioning. Prog Brain Res 2010, PMID: 21075238.
166
UpToDate: Clinical features and diagnosis of insomnia. uptodate.com/contents/clinical-features-and-diagnosis-of-insomnia.
167
«Большой город»: Врачи большого города. Сомнолог. bg.ru/health/vrachi_bolshogo_goroda_somnolog-9886.
168
Division of Sleep Medicine at Harvard Medical School: Twelve simple tips to improve Your Sleep. healthysleep.med.harvard.edu/healthy/getting/overcoming/tips.
