1. Akiskal, H.S., 1983. The bipolar spectrum: New concepts in classification and diagnosis. In: Grinspoon, L. (Ed.), Psychiatry Update: The American Psychiatric Association Annual Review, vol. II. American Psychiatric Press, Washington DC, pp. 271–292.
2. The prevalent clinical spectrum of bipolar disorders: beyond DSM-IV;Akiskal;J. Clin. Psychopharmacol.,1996
3. Criteria for the `soft' bipolar spectrum: Treatment implications;Akiskal;Psychopharmacol. Bull.,1987
4. Cyclothymic disorder: Validating criteria for inclusion in the bipolar affective group;Akiskal;Am. J. Psychiatry,1977
5. Characterologic depressions: clinical and sleep EEG findings separating `subaffective dysthymias' from `character spectrum' disorders;Akiskal;Arch. Gen. Psychiatry,1980