1. Sidi Mohamed Ben Abdellah University,Laboratory of Engineering Sciences, Multidisciplinairy Faculty Taza,Department of Physics,Fès,Morocco
2. ESTM, Moulay Ismail University,Material and Instrumentations Group,Department of Electrical Engineering,Meknes,Morocco
3. Autоmatic and Energy Conversion,Faculty of Sciences and Technology,Bеni-Mеllal,Mоrоccо