1. Quantifizierung psychotischer Symptome unter transkulturellen Aspekten;Behrends;Social Psychiat.,1971
2. Some problems concerning the reliability and structure of the scales in the Inpatient Multidimensional Psychiatric Scale (IMPS);Cairns;Arch. Psychiat. NervKrankh.,1983
3. The skree test to determine the number of factors;Cattell;Multiv. Behav. Res.,1966
4. Diagnosenschluessel und Glossar psychiatrischer Krankheiten: ICD (ICD = International Classification of Diseases) 8th Revision;Degkwitz,1971
5. Cluster Analysis;Everett,1974