0

Grotjahn, M. (1935) HARTMANN, HEINZ: Psychiatrische Zwillingsprobleme. Jahrbücher f. Psych. u. Neurologie. Bd. 50 u. 51. ROSANOFF, HANDY und PLESSET: The etiology of manic-depressive syndrom with special reference to their occurrence in twins. Amer. J. Psychiat. 91, 735, 1935. J. CRONIN: An analysis of the neuroses of identical twins. Psychoanal. Rev. 20, 375.. Internationale Zeitschrift für Psychoanalyse 21:447-448