1. School of Department of Electronic Commerce, Hefei Information Technology University, Hefei, China
2. Department of Mathematics, Air University Islamabad Multan Campus, Multan, Pakistan
3. Department of Mathematics, Comsats University Islamabad, Lahore Campus, Lahore, Pakistan
4. Department of Mathematics, The Women University Multan, Pakistan
5. Faculty of Education, Van Yuzuncu Yil University, Van, Turkey