[1] Economics and Industrial Engineering,Chiara Franzoni is in the Department of Management
[2] Politecnico di Milano,Giuseppe Scellato is in the Department of Management and Production Engineering
[3] Milano,the Department of Economics Cognetti de Martiis
[4] Italy.,undefined
[5] Politecnico di Torino,undefined
[6] Torino,undefined
[7] Italy,undefined
[8] and the Bureau of Research on Innovation,undefined
[9] Complexity and Knowledge,undefined
[10] Collegio Carlo Alberto,undefined
[11] Moncalieri,undefined
[12] Italy.,undefined
[13] Paula Stephan is at the Andrew Young School of Policy Studies,undefined
[14] Georgia State University,undefined
[15] Atlanta,undefined
[16] Georgia,undefined
[17] USA,undefined
[18] University of Torino,undefined
[19] Torino,undefined
[20] Italy,undefined
[21] and the National Bureau of Economic Research,undefined
[22] Cambridge,undefined
[23] Massachusetts,undefined
[24] USA.,undefined