Erik Hans Klijn is Professor of Public Administration at Erasmus University Rotterdam, The Netherlands. His research focuses on topics like network management, the role of trust, public-private partnerships, democratic legitimacy, the influence of media attention, and branding.Joop Koppenjan is Professor of Public Administration at Erasmus University Rotterdam, The Netherlands. He studies public policy, complex decision-making, governance networks, public-private partnerships, and public service delivery in areas like transport, water, urban governance, social support, care, and safety.