1. Department of Management andProduction Engineering Polytechnic University of Turin Turin, Italy and Bureau of Reasearch on InnovationComplexity and Knowledge (BRICK) Collegio Carlo Alberto Turin, Italy
2. Department of Management andProduction Engineering Polytechnic University of Turin Turin, Italy
3. Department of Business andManagementLUISS Guido Carli Rome, Italy
4. Department of Economics andStatistics Cognetti de Martiis University of Turin Turin, Italy, and Bureau of Reasearch on InnovationComplexity and Knowledge (BRICK) Collegio Carlo Alberto Turin, Italy