1. Division of Applied Mathematics, Science and Technology Advanced Institute, Van Lang University, Ho Chi Minh City, Vietnam + Faculty of Applied Technology, School of Technology, Van Lang University, Ho Chi Minh City, Vietnam
2. School of Mathematical and Statistical Sciences, University of Galway, Galway, Ireland
3. Applied Analysis Research Group, Faculty of Mathematics and Statistics, Ton Duc Thang University, Ho Chi Minh City, Vietnam
4. Division of Applied Mathematics, Thu Dau Mot University, Binh Duong Province, Vietnam