5Brian J. Phillips, "What Is a Terrorist Group? Conceptual Issues and Empirical Implications," Terrorism and Political Violence, Vol.27, No.2, 2015, pp. 225 - 238.
6Sandier Todd, "New Frontiers of Terrorism Research: An Introduction," Journal of Peace Research, Vol.48, No.3, 2011, pp.279-286.
7Robert A. Pape, "Introduction: What Is New About Research on Terrorism," Security Studies, Vol.18, No.4, 2009, pp.643-650.
8Andrew Silke, "Research on Terrorism: A Review of the Impact of 9/11 and the Global War on Terrorism," in Hsinchun Chen, ed., Terrorism Informaties, Berlin: Springer, 2008, pp.27-50.
9Bruce Hoffman, Inside Terrorism: Revised and Expanded Edition, New York: Columbia University Press, 2006.
10Robert A. Pape, Dying to Win: The Strategic Logic of Suicide Terrorism, London: Palgrave Macmillan, 2008, pp.343-361.
