1. Investigations of equivocal suicides;Litman;JAMA,1963
2. 500 psychological autopsies;Litman;J Forensic Sci,1989
3. Searle vs. Allstate Life Insurance Company, 38 Cal. 3d 425 (Cal. 1985)
4. Centers for Disease Control and Prevention (CDC) Injury prevention & control: data & statistics (WISQARS) 2010 http://webappa.cdc.gov/sasweb/ncipc/leadcaus10_us.html