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2. Sleep, sleep deprivation and depression;Borbély;Human Neurobiology,1982
3. Sleep studies on a 90-minute day;Carskadon;Electroencephalography and Clinical Neurophysiology,1975
4. Distribution of REM sleep on a 90-minute-sleep-wake schedule;Carskadon;Sleep,1980
5. The effect of biperiden on nap sleep after sleep deprivation in depressed patients;Dressing;Neuropsychopharmacology,1992