1. Diagnostic and statistical manual of mental disorders;American Psychiatric Association,1987
2. Scale for the assessment of negative symptoms (SANS);Andreasen,1983
3. Ventricular enlargement in schizophrenia: Relationship to positive and negative symptoms;Andreasen;American Journal of Psychiatry,1982
4. Clozapine in schizophrenic outpatients: Efficacy, longterm outcome, and predictors;Breier;Scientific Abstracts of the annual meeting of the American College of Neuropsychopharmacology, San Juan, 14–18 December 1992,1992
5. Neuroleptic responsivity of positive and negative symptoms in schizophrenia;Breier;American Journal of Psychiatry,1987