1. Human circadian rythms in continuous darness: entrainment by social cues;Ashoff;Science,1971
2. Wever RA. Order and disorder in human circadian rhythmicity: possible relation to mental disorders. In: Kupfer DJ, Monk TH, Barchas DJ, eds. Biological rhythms and Mental Disorders. New York: IDOSI Publications, 1988;253–346.
3. Social zeigebers and biological rhythms: a unified approach to understanding the etiologiy of depression;Ehlers;Arch Gen Psychiatry,1988
4. Biological rhythm and depression: the role of zeitgebers and zeitstorers;Ehlers;Depression,1993
5. Interpersonal and social rhythm therapy for bipolar disorder: integrating interpersonal and behavioral approaches;Frank;Behav Ther,1994