1. Dependence on delta 9-tetrahydrocannabinol: studies on precipitated and abrupt withdrawal;Aceto;J. Pharmacol. Exp. Ther.,1996
2. APA, 1980. Diagnostic and Statistical Manual of Mental Disorders. 3rd ed. Washington D.C.: American Psychiatric Association.
3. APA, 1987. Diagnostic and Statistical Manual of Mental Disorders. 3rd ed - revised. Washington D.C.: American Psychiatric Association.
4. APA, 1994. Diagnostic and Statistical Manual of Mental Disorders. 4th ed. Washington D.C.: American Psychiatric Association.
5. Brown, L.P., 1995. Press release: The National Household Survey on Drug Abuse. Office of National Drug Control Policy. The White House, Washington, DC.