1. Aicardi J (1998) Diseases of the Nervous System in Children, 2nd Edition. Cambridge, England, Cambridge University Press
2. Allen D (2000) Recent research on physical aggression in persons with intellectual disability: an overview. J Intellect Dev Disabil 25:41–57
3. Aman MG, Richmond G, Stewart AW et al (1987) The Aberrant Behavior Checklist: factor structure and the effect of subject variables in American and New Zealand facilities. Am J Ment Defic 91:570–578
4. American Psychiatric Association (1952) Diagnostic and Statistical Manual: Mental Disorders. American Psychiatric Association, Washington, DC
5. American Psychiatric Association (1968) Diagnostic and Statistical Manual of Mental Disorders, 2nd ed. American Psychiatric Association, Washington, DC