Jolien Grandia is Assistant Professor of Public Management at the Department of Public Administration and Sociology, Erasmus University Rotterdam, the Netherlands. Her research examines transformations in public procurement, such as sustainable procurement, from a public management and governance perspective. Leentje Volker is a Full Professor of Integrated Project Delivery at the University of Twente, the Netherlands. She is an expert in the field of public-private collaborations in the construction industry. Her work focuses on establishing and maintaining relations between buyers and suppliers at different institutional levels.
