title: [Human sleep characteristics with double alternation of "sleep--wakefulness" cycles].
mesh_terms: D000328:Adult; D001921:Brain / Q000503:physiopathology*; D002940:Circadian Rhythm; D006801:Humans; D008297:Male; D012890:Sleep / Q000502:physiology*; D012893:Sleep Wake Disorders / Q000209:etiology*; D013997:Time Factors
vernacular_title: Osobennosti sna cheloveka pri dvukratnom cheredovanii tsiklov "son--bodrstvovanie".