1. Lorraine University, LMOPS-EA 4423; 57070 Metz France
2. Supelec; LMOPS; 57070 Metz France
3. IUT de Thionville-Yutz, LMOPS, Espace Cormontaigne; 57970 Yutz France
4. CEA-LPSE, Faculty of Sciences II; Lebanese University; 90656 Jdeidet El Mten Lebanon