1. University of Ferhat Abbas,Laboratoire d'Electronique de Puissance et Commande Industrielle (LEPCI),Department of Electronics,Sétif,Algeria,19000
2. University 20 Aout 1955-Skikda,Laboratoire d'Electrotechnique de Skikda (LES),Department of Electrical Engineering,Skikda,Algeria,21000
3. The Instituto de Telecomunicações, Campus Universitário de Santiago,Aveiro,Portugal,3810–193
4. School of Engineering and Informatics, University of Bradford,Bradford,UK,BD7 1DP