1. Helmchen H, Baltes MM, Geiselmann B, Kanowski S, Linden M, Reischies FM, Wagner M, Wilms HU (1996) Psychische Erkrankungen im Alter. In: Mayer KU, Baltes PB (Hrsg) Die Berliner Altersstudie. Akademie Verlag, Berlin
2. Morawetz C, Stevens A, Wormstall H (1996) Dementia and depression: co-distribution and risk factors in a geriatric in- and outpatient sample. Eur Psychiatry 11:369–375