1. Laboratory of Pure Mathematics and Applications, Amara Telidji University , Laghouat, Algeria.
2. Department of Mathematics, College of Sciences and Arts, Al-Rass, Qassim University , Qassim, Kingdom of Saudi Arabia.
3. Laboratory of Fundamental and Applied Mathematics of Oran (LMFAO), University of Oran 1, Ahmed Benbella , Oran, Algeria.
4. Department of Mathematics and Computer Science, Larbi Tebessi University , Tebessa, Algeria.