1. Department of Mathematics, Science Faculty, Firat University, 23119 Elazig, Turkey
2. Department of Mathematics, Science Faculty, Federal University Dutse, 7156 Jigawa, Nigeria
3. Department of Basic Sciences and Related Studies, Mehran University of Engineering and Technology, 76062 Jamshoro, Pakistan
4. Institute for Computational Mathematics, Technische Universität Braunschweig, 38106, Braunschweig, Germany
5. Department of Mathematics, Cankaya University, Öǧretmenler Cad 1406530, Ankara, Turkey
6. Institute of Space Sciences, Magurele, Bucharest, Romania