1. Anderson R. Why Information Security is Hard---An Economic Perspective. Sept. 2001; www.cl.cam.ac.uk/~rja14/econsec.html Anderson R. Why Information Security is Hard---An Economic Perspective. Sept. 2001; www.cl.cam.ac.uk/~rja14/econsec.html
2. Brookings Institution. Interdependent Security: Implications for Homeland Security Policy and Other Areas. Policy Brief #108 Oct. 2002. Brookings Institution. Interdependent Security: Implications for Homeland Security Policy and Other Areas. Policy Brief #108 Oct. 2002.