1. Division of Applied Mathematics, Science and Technology Advanced Institute, Van Lang University, Ho Chi Minh City, Viet Nam, Faculty of Technology, Van Lang University, Ho Chi Minh City, Vietnam
2. Faculty of Fundamental Science, Industrial University of Ho Chi Minh City, Viet Nam
3. Applied Analysis Research Group, Faculty of Mathematics and Statistics, Ton Duc Thang University, Ho Chi Minh City, Vietnam