1. School of Science, Zhejiang University of Science and Technology, Hangzhou, P.R. China
2. Department of Mathematics, Division of Science and Technology, University of Education, Lahore, Pakistan
3. College of Mathematics and Systems Science, Shandong University of Science & Technology, Qingdao, Shandong, P.R. China
4. Material Science Innovation and Modelling (MaSIM) Research Focus Area, North-West University (Mafikeng Campus), Mmabatho, South Africa
5. Department of Mathematics and Statistics, International Islamic University, Islamabad, Pakistan
6. Department of Mathematics, Northern University, Nowshera, KPK, Pakistan