1. Valen, Henry, Hanne Marthe Narud, and Olafur Hardarsson. 2000. Geographical Representation. In Beyond Westminister and Congress: The Nordic Experience, edited by P. Esaiasson and K. Heidar, pp. 107–31. Columbus: Ohio State University Press
2. Taylor, Michael 1987. The Possibility of Cooperation. Cambridge: Cambridge University Press
3. Constitutionalism and Secession
4. World Bank. 1999. Entering the 21st Century: World Development Report. Oxford: Oxford University Press
5. A Rational Choice Perspective on the Role of Ideas: Shared Belief Systems and State Sovereignty in International Cooperation