1. Bioterrorism and biocrimes: the illicit use of biological agents in the 20th century;Carus,1999
2. Chemical and biological terrorism: the threat according to the open literature;Purver;Canadian Security Intelligence Service (unclassified),1995
3. America's Achilles' heel: nuclear, biological, and chemical terrorism and covert attack;Falkenrath,1998
4. A large community outbreak of salmonellosis caused by intentional contamination of restaurant salad bars;Torok;JAMA,1997