Something interesting by the way:
'The role of cities in the institutional
framework of the European Union' is an interesting study by Hubert Heinelt.
This study, commissioned by the European Parliament’s Policy Department for
Citizens’ Rights and Constitutional Affairs at the request of the AFCO Committee,
examines the role of cities in the institutional framework of the European Union
and shows their limits and opportunities to engage effectively in policy-making
at the EU level.
Available here.