1. Alander, Minna, and Nicolai von Ondarza. 2020. The European Citizens' initiative and its reform. Truly unique or the same old story? In Deliberative democracy in the EU. Countering populism with participation and debate, ed. Steven Blockmans and Sophia Russack, 281–296. Brussels, London: CEPS Rowman & Littlefield International.
2. Arendt, Hannah. 1945. The stateless people. Commentary 8 (2): 137–153.
3. ———. 1967. The origins of totalitarianism. London: George Allen & Unwin.
4. Banting, Keith, and Will Kymlicka, eds. 2017. The strains of commitment: The political sources of solidarity in diverse societies. Oxford: Oxford University Press.
5. Barber, Benjamin R. 2013. If mayors ruled the world. New Haven: Yale University Press. epub edition.