Elected 1997
Private Law (Contract, Restitution, Commercial law), Constitutional and Administrative Law (in particular the position of the judiciary and human rights)
The dynamics, effectiveness and legitimacy of public and private regulatory regimes at national, regional and global levels
Constitutional law (German and comparative) and constitutional theory, with a strong interest in the history of modern constitutionalism and constitutional politics; constitutionalism under conditions of globalisation, constitutional adjudication; European integration
