1. School of Electronics and Information, Jiangsu University of Science and Technology, Zhenjiang, China
2. Department of Mathematics and Statistics, Hazara University, Mansehra (KPK), Pakistan
3. Department of Mathematics, COMSATS University Islamabad, Attock Campus, 43600 Attock, Pakistan
4. Department of Electrical and Computer Engineering, COMSATS University Islamabad, Attock Campus, 43600 Attock, Pakistan