1. Institute of Research Development Duy Tan University Da Nang 550000 Vietnam
2. Department of Mathematics and Computer Science University of Science Ho Chi Minh City Vietnam
3. Vietnam National University Ho Chi Minh City Vietnam
4. Applied Analysis Research Group, Faculty of Mathematics Statistics Ton Duc Thang University Ho Chi Minh City Vietnam
5. Faculty of Information Technology Macau University of Science Technology Macau 999078 China
6. Faculty of Mathematics Computational Science Xiangtan University Hunan 411105 China