1. Circadiane Periodik als Grundlage des Schlaf-Wach-Rhythmus;Aschoff,1970
2. Diurnal and nocturnal sleep stage patterns following sleep deprivation;Berger;Psychonom. Sci.,1971
3. Effects of night duty on sleep patterns of nurses;Bryden;Psychophysiology,1973
4. Circadian variation in mental efficiency;Colquhoun,1971
5. The sleep of train drivers: an example of the effects of irregular work schedules on sleep;Foret,1972