1. Department of Mathematics and Statistics, University of Agriculture Faisalabad, Sub-Campus Depalpur, Okara, Punjab 56300, Pakistan
2. Department of Mathematics and Statistics, University of Agriculture, Faisalabad 38000, Pakistan
3. Mathematics Department, Faculty of Science, Taibah University, Al-Madinah Al-Munawwarah 41411, Kingdom of Saudi Arabia
4. Institute of Applied System Analysis, Jiangsu University, Zhenjiang, Jiangsu 212013, P. R. China