1. Kewen College, Jiangsu Normal University, Xuzhou 221132, P. R. China
2. Department of Mathematics and Statistics, Hazara University Mansehra, Pakistan
3. Faculty of Transport Engineering, University of Pardubice, 53 210 Pardubice, Czech Republic
4. Department of Mathematics, Mohi-ud-Din Islamic University, Nerian Sharif, Azad Kashmir 12010, Pakistan
5. Department of Physics, College of Sciences, Imam Mohammad Ibn Saud Islamic University (IMSIU), 11623 Riyadh, Saudi Arabia