1. Graf Industries S.p.A., 41015 Nonantola, Italy
2. “Marco Biagi” Foundation, University of Modena and Reggio Emilia, 41121 Modena, Italy
3. Department of Economics “Marco Biagi”, School of Doctorate E4E (Engineering for Economics–Economics for Engineering), University of Modena and Reggio Emilia, 41121 Modena, Italy