1. Department of Energetics, Politecnico di Torino, Corso Duca degli Abruzzi 24, Torino 10129, Italy
2. Gamma Technologies, LLC, 601 Oakmont Lane, Westmont, Illinois 60559, United States
3. General Motors Global Propulsion Systems, S.r.l., Corso Castelfidardo 36, Torino 10138, Italy