1. Faculty of Mathematical Economics, Banking University of Ho Chi Minh City, Vietnam
2. Division of Computational Mathematics and Engineering, Institute for Computational Science, Ton Duc Thang University, Ho Chi Minh City, Vietnam
3. Faculty of Mathematics and Statistics, Ton Duc Thang University, Ho Chi Minh City, Vietnam
4. Faculty of Applied Sciences, University of Technology and Education, Ho Chi Minh City, Vietnam