Steven Brakman is Professor of Economics at the University of Groningen, The Netherlands. His most recent book is the The New Introduction to Geographical Economics (Cambridge University Press, 2009), co-authored with Harry Garretsen and Charles Van Marrewijk. Peter van Bergeijk is Professor of International Economics and Macroeconomics at the Institute of Social Studies, The Hague. He is also Deputy Director of CERES, the coordinating body for development economics research in the Netherlands. His most recent book is A Wealth of Creations (2007), co-edited with Gerrit Faber and Norine Maniran.