1. Department of Industrial and Information Engineering and Economics, University of L’Aquila, Piazzale Ernesto Pontieri, Monteluco di Roio, 67100 L’Aquila, Italy
2. Department of Industrial Engineering, Tor Vergata University of Rome, Via del Politecnico, 1, 00133 Rome, Italy
3. Department of Astronautics, Electrical and Energetics Engineering, Sapienza University of Rome, Via Eudossiana, 18, 00185 Rome, Italy