RT Journal Article SR Electronic T1 Standard of Proof Required in Tennessee for a Capital Defendant to Prove Mental Retardation JF Journal of the American Academy of Psychiatry and the Law Online JO J Am Acad Psychiatry Law FD American Academy of Psychiatry and the Law SP 114 OP 116 VO 34 IS 1 A1 Christine Negendank A1 Melvin Guyer YR 2006 UL http://jaapl.org/content/34/1/114.abstract AB