1. Intelligence and Security Informatics, Proceedings of the First Symposium on Intelligence and Security Informatics, ISI 2003, Tucson, Arizona, June,2003
2. Intelligence and Security Informatics for National and Homeland Security, Proceedings of the Second Symposium on Intelligence and Security Informatics, ISI 2004, Tucson, Arizona, June,2004
3. National Research Council, Making the Nation Safer: The Role of Science and Technology in Countering Terrorism, Committee on Science and Technology for Countering Terrorism, The National Academies Press, Washington, DC, 2002.
4. Office of Homeland Security, The White House, “National Strategy for Homeland Security”, 2002 (July). Office of Homeland Security. (2002). National Strategy for Homeland Security. Washington D.C.: Office of Homeland Security. Retrieved August 19, 2004, from the World Wide Web: http://www.whitehouse.gov/homeland/book/nat_strat_hls.pdf.