1. LPMAT Laboratory, FSAC, Hassan II University, Casablanca, Morocco.
2. REMTEX Laboratory, ESITH, Casablanca, Morocco.
3. IRDL Laboratory, UMR-CNRS 6027, ENSTA Bretagne, Brest, France.
4. LN2 Laboratory, CNRS, Sherbrooke University, Sherbrooke, Canada.