1. American Psychiatric Association (1980) DSM-III: diagnostic and statistical manual of mental disorders, 3rd edn.
2. American Psychiatric Association (1987) DSM-III: diagnostic and statistical manual of mental disorders, 3rd edn - Revised.
3. American Psychiatric Association (1994) DSM-IV: diagnostic and statistical manual of mental disorders, 4th edn.
4. Ethoexperimental approaches to the biology of emotion;Blanchard;Ann. Rev. Psychol.,1988
5. Risk assessment and animal models of anxiety;Blanchard,1991