Affiliation: | 1. Applied Analysis Research Group, Faculty of Mathematics and Statistics, Ton Duc Thang University, Ho Chi Minh City, Vietnam.nguyenhuytuan@tdt.edu.vn;3. Institute of Computational Science and Technology, Ho Chi Minh City, Vietnam.;4. Faculty of Mathematics and Computer Science, University of Science, Vietnam National University, (VNU-HCMC), Ho Chi Minh City, Vietnam. |