Affiliation: | [1]Higher Institute of Applied Sciences and Technology of Gab`es, Department of Mathematics, Street Amor Ben El Khatab, 6029 Gab`es, Tunisia;National Engineering School of Sfax, Department of Electrical Engineering, Street Soukra km 3.5, B.P. 1173, 3038 Sfax, Tunisia; [2]National Engineering School of Sfax, Department of Electrical Engineering, Street Soukra km 3.5, B.P. 1173, 3038 Sfax, Tunisia |