1. Department of Mathematics, COMSATS University Islamabad, Lahore, Campus 54000, Pakistan
2. Division of Science and Technology, University of Education, Lahore, 54000, Pakistan
3. Department of Mathematics and Research Institute of Natural Science, Gyeongsang National University, Jinju, 52828, Korea
4. Center for General Education, China Medical University, Taichung, 40402, Taiwan