1. Diagnostic and Statistical Manual of Mental Disorders, 3rd edition-revised (DSM-III-R);American Psychiatric Association,1987
2. Scale for the Assessment of Negative Symptoms in Schizophrenia;Andreasen,1982
3. Scale for the Assessment of Positive Symptoms (SAPS);Andreasen,1983
4. Multivariate Statistical Methodologies Used in the International Pilot Study of Schizophrenia. Mental Health Service System Report;Bartko,1980
5. Dementia Praecox of the Group of Schizophrenias;Bleuler,1911