Hellmut Wollmann is Emeritus Professor of Public Policy and Public Administration at Humboldt University Berlin, Germany. His recent publications include Evaluation in Public  Sector Reform (2003), Provision of Public Services in Europe (edited with G. Marcou, 2010), and Introduction into Comparative Public Administration (with S. Kuhlmann, 2014). Ivan Koprić is Professor of Administrative Science and Local Governance at the Faculty of Law, University of Zagreb, Croatia, and President of the Institute of Public Administration in Zagreb. Gérard Marcou is Professor of Public Law at the University Paris 1 Panthéon-Sorbonne, Institut de Recherche Juridique de la Sorbonne, France, and Director of GRALE (Groupement de Recherche sur l”Administration Locale en Europe).