1. Agranoff, R. (2004). Autonomy, Devolution and Intergovernmental Relations. Regional & Federal Studies, 14(1), 26–65.
2. Andersen, S. S., & Sitter, N. (2006). Differentiated Integration: What Is It and How Much Can the EU Accommodate? Journal of European Integration, 28(4), 313–330.
3. Buzan, B., & Lawson, G. (2016). Theory, History, and the Global Transformation. International Theory, 8(3), Cambridge University Press, 502–522.
4. Clarke, H., Goodwin, M., & Whiteley, P. (2017). Brexit. Why Britain Voted to Leave the European Union. In M. Guderjan et al. (Eds.), Contested Britain. Brexit, Austerity and Agency (pp. 117–130). Cambridge: Cambridge University Press.
5. Cochrane, A. (2020). From Brexit to the Break-Up of … England? Thinking In and Beyond the Nation. In M. Guderjan et al. (Eds.), Contested Britain. Brexit, Austerity and Agency (pp. 161–173). Bristol: Bristol University Press.