1. Department of Mathematics Alagappa University Karaikudi India
2. Ramanujan Centre for Higher Mathematics Alagappa University Karaikudi India
3. School of Mathematics Southeast University Nanjing China
4. Hunan Provincial Key Laboratory of Mathematical Modeling and Analysis in Engineering, School of Mathematics and Statistics Changsha University of Science and Technology Changsha China
5. Faculty of Automatic Control, Electronics and Computer Science, Institute of Automatic Control, Control and Robotics Group Silesian University of Technology Gliwice Poland
6. Department of Electronics, Computing and Mathematics University of Derby Derby UK