1. Sexually addicted lust murderers;Blanchard;Sexual Addiction and Compulsivity,1995
2. Eric Clapton: In his own words;Clapton,1995
3. Crime classification manual;Douglas,1992
4. Anatomy of motive;Douglas,1999
5. A working definition of serial murder and the reduction of linkage blindness;Egger;Journal of Police Science and Administration,1984