1. Department of Economics and Statistics Cognetti De Martiis, University of Turin, Turin, Italy.
2. Department of Managerial Economics, Strategy and Innovation, KU Leuven, Leuven, Belgium
3. Center for R&D Monitoring (ECOOM), KU Leuven, Leuven, Belgium; and Centre for European Economic Research (ZEW), Mannheim, Germany.
4. Department of Economics of Innovation and Industrial Dynamics, Centre for European Economic Research (ZEW), Mannheim, Germany
5. Centre for Research in Economics and Management (CREA), University of Luxembourg, Luxembourg.
6. Department of Economic Policy, Università Cattolica del Sacro Cuore, Milan, Italy
7. BRICK, Collegio Carlo Alberto, Moncalieri, Turin, Italy
8. ICRIOS, Bocconi University, Milan, Italy.