His research interests include European and Comparative Constitutional Law; Media Law; Internet Law; Fundamental Rights. He published a number of books and essays in the field of European and Comparative Constitutional Law, including The Interaction between Europe's Legal Systems: Judicial Dialogue and the Creation of Supranational Laws, 2012, Edward Elgar Publishing; Modeling the Liability of Internet Service Providers: Google versus Vividown: A Constitutional Perspective, Egea, 2013.