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8Friedrich Kratochwil,Rules, Norms, and Decisions, Cambridge: Cambridge University Press,1989.
9Katzenstein,Keohane and Krasner,Exploration and Contestation in the Study of World Politics, p. 43.
10Jeffery T. Checkel "The Constructivist Turn in International Relations Theory, "World Politics, Vol.50, 1998, pp.324-348.