1. Department of Applied Mathematics, Huainan Normal University, Huainan 232038, China
2. Department of Mathematics, University of Sialkot, Lahore, Pakistan
3. Department of Mathematics and Statistics, The University of Lahore, Lahore 54000, Pakistan
4. Department for Management of Science and Technology Development, Ton Duc Thang University, Ho Chi Minh City, Vietnam
5. Faculty of Applied Sciences, Ton Duc Thang University, Ho Chi Minh City, Vietnam