1. Faculty of Mathematics and Computer Science, University of Science, 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 Natural Science and Technology, Tay Nguyen University, Buon Ma Thuot City, DakLak Province, Vietnam