1. Department of Mathematics, SRMV College of Arts and Science, Coimbatore, TN, India
2. Department of Science and Humanities, M.Kumarasamy College of Engineering, Karur, TN, India
3. Department of Mathematics, Faculty of Science and Technology, Phuket Rajabhat University, Phuket 83000, Thailand
4. Department of Advanced Science and Technology, Computational Intelligence Laboratory, Toyota Technological Institute, Nagoya 468-8511, Japan