Edited by Armin von Bogdandy, Director, Max Planck Institute for Comparative Public Law and International Law, Peter Huber, Justice, Federal Constitutional Court of Germany, and Christoph Grabenwarter, Vice President, Constitutional Court of Austria

Alla Spale is the Head of the Legal Department at the Constitutional Court of the Republic of Latvia.
Anuscheh Farahat is a Senior Research Affiliate at the Max Planck Institute for Comparative Public Law and International Law in Heidelberg, Germany.
Christian Behrendt is a Professor at KU Leuven University, Belgium.
Christoph Grabenwarter is Vice President of the Austrian Constitutional Court and professor for Public Law, Business Law and International Law at the Vienna University of Economics and Business.
David Kosa is an Head of the Judicial Studies Institute, Masaryk University, Czech Republic.
Davide Paris is a Senior Research Fellow of the Max Planck Institute for Comparative Public Law and International Law in Heidelberg, Germany.
Giovanni Biaggini is Chair of the Institute of International Law and Foreign Constitutional Law.
Ineta Ziemele is the President of the Constitutional Court of the Republic of Latvia.
Juan Luis Requejo Pagés is Legal Secretary at the Court of Justice of the European Union.
Kaarlo Tuori is a Professor of Jurisprudence at the University of Helsinki, Finland.
Ladislav Vyhnánek is an Assistant Professor in the Department of Constitutional Law and Political Science at Masaryk University, Czech Republic.
Laila Jurcena is Deputy Head of the Office of the President, Constitutional Court of Latvia.
László Sólyom is the former President of Hungary.
Leonard Besselink is the chair of Constitutional Law in the Faculty Law and Head of the Department of Public Law, University of Amsterdam, The Netherlands.
Maria Lúcia Amaral is a Professor in Faculty of Law, New University of Lisbon, Portugal and former Vice-President of the Constitutional Court.
Olivier Jouanjan is a Professor of Public Law at University of Paris II Panthéon-Assas, France.
Peter E Quint is Jacob A. France Professor Emeritus of Constitutional Law at The University of Maryland, Francis King Carey, School of Law, United States.
Piotr Tuleja is a Professor of Legal Sciences at Jagiellonian University, Poland.
Raffaele Bifulco is a Professor of Constitutional Law at the LUISS Guido Carli University of Rome, Italy.
Ravi Afonso Pereira is a doctoral candidate in the Faculty of Law, New University of Lisbon, Portugal.