1. Depressive disorders: Toward a unified hypothesis;Akiskal;Science,1973
2. Patterns of remote memory in amnestic and demented patients;Albert;Archives of Neurology,1981
3. Clinical and biological findings in late-onset depression;Alexopoulos,1990
4. Über eine eigenartige Erkrankung der Hirnrinde.;Alzheimer;Allgemeines Zeitschrift für Psychiatrie,1907
5. Diagnostic and statistical manual of mental disorders,1987