Chair: Sabine Lautenschläger, Member of the Executive Board, European Central Bank. Paper 2 - Superstar firms and spatial agglomeration: An exploration of effects in Europe: Laura Alfaro, Professor, Harvard University, with Maggie X. Chen, Professor, George Washington University and Harald Fadinger, Professor, University of Mannheim. Discussant: Gianmarco Ottaviano, Professor, Bocconi University