1. Department of Sociology, Kohat University of Science and Technology, Kohat, Pakistan
2. Institute of Mathematics, Khawaja Fareed University of Engineering and Information Technology, Rahim Yar Khan, Pakistan
3. Department of Mathematics, Faculty of Arts and Science, Near East University, Cyprus, Turkey
4. Department of Computer Science and Mathematics, Lebanese American University, Beirut, Lebanon
5. Applied College, Khamis Mushait, King Khalid University, Abha, Saudi Arabia