1. Laboratory Analysis and Control of PDEsDjillali Liabes University P. O. BOX 89 Sidi Bel Abbes 22000 Algeria
2. Department of Mathematics, College of Sciences and ArtsAl‐Rass, Qassim University Buraydah Saudi Arabia
3. Laboratory of Fundamental and Applied Mathematics of Oran (LMFAO)University of Oran 1 Ahmed Benbella Algeria
4. Department of Mathematics and Computer ScienceLarbi Tebessi University Tebessa 12002 Algeria
5. Department of Mathematics and Physics Sfax Engineering Preparatory Institute (I.P.E.I.S.Sfax) Box. 1172, Sfax, 3018 Tunisia