1. Diagnostic and statistical manual of mental disorders;American Psychiatric Association, Committee on Nomenclature and Statistics,1980
2. Reliability in the DSM III field trials;Hyler;Arch Gen Psychiat,1982
3. Manic-depressive insanity and paranoia;Kraepelin,1976
4. Dementia praecox and paraphrenia;Kesepelin,1971
5. The principles of science;Jevons,1958