What to read after Constitutional Principles of Local Self-government in Europe?

In Constitutional Principles of Local Self-Government in Europe Giovanni Boggero offers a meticulous account of the defining features of European constitutional local government law using both an international and comparative law perspective. The book argues that differences between local government systems in Europe, typical examples of internal affairs of a State, can be smoothed away by construing a consistent system of constitutional principles to be coherently applied at domestic level across the whole European legal space. This system can be best grasped by looking at the European Charter of Local Self-Government, which embodies a concept of self-government rooted in common legal traditions, and at its subsequent practice within the Council of Europe.