1. Department of Mathematics, Sorbonne University, 75005 Paris, France
2. Dynamic Systems Laboratory, Department of Mathematics, University of Science and Technology Houari Boumediene, Algiers 16111, Algeria
3. Department of Mathematics, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
4. Laboratoire de Mathématiques Appliquées et de Modélisation, Université 8 Mai 1945 Guelma, B.P. 401, Guelma 24000, Algeria