1. Faculty of Mathematical Sciences, Department of Applied Mathematics, University of Tabriz, Tabriz, Iran
2. Faculty of Education, Department of Mathematics, Erciyes University, Melikgazi-Kayseri, Turkey
3. Faculty of Science, Department of Mathematics, University of Zakho, Zakho, Iraq
4. Department of Mathematics, College of Basic Education, University of Duhok, Duhok, Iraq
5. Department of Computer Sciences, Azerbaijan State Pedagogical University, Baku, Azerbaijan