Enders, Walter - In: Handbook of defense economics : volume 2, Defense in a …, (pp. 815-866). 2007
The chapter surveys the empirical literature concerning the measurement of terrorism, effectiveness of counterterrorism … and coding the data. Section 3 discusses a number of empirical studies that measure the effects of counterterrorism … due to the events of September 11, 2001 (9/11) and the resulting changes in counterterrorism policy. It is shown that the …