1. Laboratory of Pure and Applied Mathematics, Faculty of Exact Sciences and Informatics (FSEI), UMAB University Abdelhamid Bni Badis of Mostaganem, Mostaganem 27000, Algeria
2. Faculty of Technology, University Yahia FARES, Medea, Algeria
3. Laboratory of Pure and Applied Mathematics, Faculty Exact Sciences and Informatics, UMAB University of Mostaganem, Mostaganem 27000, Algeria