1. Department of Mathematics, College of Science, University of Zakho, Zakho, Iraq
2. Department of Computer Science, College of Science, Knowledge University, Erbil 44001, Iraq
3. Department of Mathematics, Faculty of Science, Firat University, Elazig, Turkey
4. Deparment of Computer Engineering, Biruni University, Istanbul, Turkey
5. Faculty of Engineering and Natural Sciences, Istanbul Okan University, Istanbul, Turkey
6. Department of Mathematics, Federal University Dutse, Jigawa, Nigeria
7. Operational Research Center in Healthcare, Near East University, TRNC Mersin 10, Nicosia, Turkey