Frank Schimmelfennig is Professor of European Politics at ETH Zurich, Switzerland. He is a member of the Center for Comparative and International Studies of ETH and the University of Zurich. His research focuses on European integration and, specifically, integration theory, enlargement, differentiated integration, EU democracy promotion, and democratization.
Thomas Winzen is a Lecturer in Government at the University of Essex, United Kingdom. His research focuses on the design and legitimate governance of the European Union and other international institutions with a particular interest in differentiated integration, parliamentarization, and emerging structures of global internet governance.