title: [Active rest on prolonged space flights as a psychological problem].
mesh_terms: D000203:Activities of Daily Living; D001154:Art; D001887:Boredom; D004581:Electronics; D006801:Humans; D008606:Mental Processes / Q000502:physiology; D008678:Metaphysics; D009040:Motion Pictures; D009146:Music; D010988:Play and Playthings; D011603:Psychophysiology; D012063:Relaxation; D012146:Rest; D013026:Space Flight; D013997:Time Factors; D014851:Wakefulness / Q000502:physiology; D014937:Work
vernacular_title: Aktivnyĭ otkykh v dlitel'nykh kosmicheskikh poletakh kak psikhichesaiak prolema.