1. Odisee University College of Appl. Sciences,Dep. of Industrial Science and Technology,Ghent,Belgium
2. University of Salento,Dep. of Engineering for Innovation,Lecce,Italy
3. Univ. of Bologna,Dep. of Electrical, Electronic and Information Engineering G. Marconi,Bologna,Italy
4. University of Perugia,Dep. of Engineering,Perugia,Italy