1. Division of Computational Mathematics and Engineering, Institute for Computational Science, Ton Duc Thang University, Ho Chi Minh City, Vietnam + Faculty of Mathematics and Statistics, Ton Duc Thang University, Ho Chi Minh City, Vietnam
2. Department of Mathematics, University of Rajasthan, Jaipur, Rajasthan, India
3. Division of Applied Mathematics, Science and Technology Advanced Institute, Van Lang University, Ho Chi Minh City, Vietnam + Faculty of Applied Technology, School of Technology, Van Lang University, Ho Chi Minh City, Vietnam