1. American Psychiatric Association (1980) DSM-III. APA, New York
2. Brodie JD, Wolf AP, Wolkin A, Arnett CD, Angrist B, Fowler J, Smith M, Russel J, Logan J, Christman D, Rotrosen J, Volkow N (1985) PET studies in schizophrenia. Abstracts 4th World Congr Biol Psychiatry, Philadelphia
3. Clauss H, Ebner G (1974) Grundlagen der Statistik. VEB Volk and Wissen, Berlin
4. Crow TJ, Corsellis JAN, Frith CD, Johnstone EC, Owen F, Bloxham CB, Ferrier IN, Owens DGC (1981). The search for changes underlying the type II syndrome in schizophrenia. In: Perris C, Struw G, Jansson B (eds) Biological psychiatry 1981. Elsevier, Amsterdam, pp 727?731
5. Dahl G (1972) WIP, Reduzierter Wechsler-Intelligenz-Test. Hain, Meisenheim