1. Fundamental and Applied Mathematics Laboratory, Faculty of Sciences Ain Chock, Hassan II University of Casablanca, Morocco
2. Department of Mathematics, Yildiz Technical University, Istanbul, Turkey
3. Laboratory of Modelling and Mathematical Structures, Department of Mathematics, Faculty of Science and Technology of Fez, Box 2202, University S.M. Ben Abdellah Fez, Morocco
4. Department of Mathematics, Marmara University, Istanbul, Turkey