1. Department of Management andProduction EngineeringPolitecnico di TorinoTurin 10129 Italy
2. Bureau for Research in Innovation, Complexity and Knowledge (BRICK)Collegio Carlo AlbertoTurin 10122Italy
3. Department of Management and25 Production EngineeringPolitecnico di TorinoTurin 10129ItalyandLABORatorio Riccardo Revelli -Centre for Employment StudiesTurin 10122 Italy
4. Centre Emile BernheimUniversité Libre de Bruxelles (ULB)Brussels 1050Belgium
5. Department of Business andManagementLUISS UniversityRome 00197 Italy
6. School of Management and EconomicsUniversity of TurinTurin 10134 Italy
7. and Collegio Carlo AlbertoTurin 10122 Italy
8. Research Institute on SustainableEconomic Growth (IRCrES-CNR)Moncalieri (Turin) 10024Italy