1. Department of Computer Science, University of the Punjab, Lahore, Pakistan
2. Mathematics Department, Faculty of Science, Taibah University, Al-Madinah Al-Munawarah, Saudi Arabia
3. Department of Mathematics and Statistics, The University of Lahore, 54000 Lahore, Pakistan
4. Department of Mathematics, COMSATS University Islamabad, Lahore Campus, Lahore, Pakistan
5. Department of Sciences and Technology, Ranyah University Collage, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia