1. Department of Mathematics, COMSATS University Islamabad, Wah Campus, Wah Cantt, 47040, Pakistan
2. Department of Mathematics, Faculty of Sciences, HITEC University, Taxila Cantt, Taxila, 47040, Pakistan
3. Department of Electrical & Computer Engineering, COMSATS University Islamabad, Wah Campus, Wah Cantt, 47040, Pakistan
4. Department of Mathematics, Government College University, Faisalabad, 38000, Pakistan