Datganoli yn yr UE (2000 ymlaen)

Moreno, L. The federalization of Spain. 2001.

European Bureau for Lesser-Used Languages. Final document on the Laken European Council and the future of the European Union. 2002.

Vandelli, L. Devolution e altre storie: paradossi, ambiguità e rischi di un progetto politico. 2002.

Hopkins, W. Devolution in context: regional, federal and devolved government in the member states of the European Union. 2002.

EBLUL: contribution to the consultation on language learning and linguistic diversity.  European Bureau for Lesser-Used Languages. 2003.

Magone, J. Regional institutions and governance in the European Union. 2003.

Keating, M. Devolution and public policy: a comparative perspective. 2006.

Konvitz, J. K. Italy: ensuring regulatory quality across levels of government. 2007.

Torre, A. et al. Processi di devolution e transizioni costituzionali negli Stati unitari, dal Regno Unito all'Europa: atti del Convegno dell'Associazione di diritto pubblico comparato ed europeo, Bologna, Università degli studi, 24-25 novembre 2006. 2007.

Balaguer, I. Ciutadania i identitat nacional en els processos de "devolution" a la Gran Bretanya i a França. Barcelona : Institut d'Estudis Autonòmics. 2008.

Vaubel, Roland. The European institutions as an interest group: the dynamics of ever-closer union. 2009.

Alonso, S. Challenging the state: devolution and the battle for partisan credibility: a comparison of Belgium, Italy, Spain and the United Kingdom. 2012.