1. Department of Engineering “Enzo Ferrari”, University of Modena and Reggio Emilia, Modena, Italy
2. Department of Information Engineering, University of Padova, Padova, Italy
3. Department of Sciences and Methods for Engineering (DISMI) and the EN and TECH Center, University of Modena and Reggio Emilia, Reggio Emilia, Italy
4. Ferdinand-Braun-Institut (FBH), Berlin, Germany