1. Laboratory of Analysis and Control of Differential Equations “ACED”, Faculty MISM, Department of Mathematics, 8 May 1945 University of Guelma, Guelma 24000, Algeria
2. Department of Mathematics and Statistics, University of Lahore, Sargodha 40100, Pakistan
3. Department of Mathematics, Faculty of Sciences, Sfax University, BP 1171, Sfax, Tunisia
4. University of Badji Mokhtar Annaba, B.P. No 12 RP, 23000, Annaba, Algeria