1. Department of Environment, Land and Infrastructure Engineering (DIATI), Politecnico di Torino, 10129 Turin, Italy
2. Department of Management, University of Turin, 10134 Turin, Italy
3. Department of Economics and Statistics “Cognetti de Martiis”, University of Turin, 10153 Turin, Italy
4. School of Business and Law, Edith Cowan University, Joondalup 6027, Australia