1. Department of Mathematics, Alagappa University, Karaikudi 630 003, India
2. Ramanujan Centre for Higher Mathematics, Alagappa University, Karaikudi 630 003, India
3. School of Mathematics and Statistics, Hunan Normal University, Hunan 410 081, China
4. School of Information Science and Engineering, Chengdu University, Chengdu, 610106, China
5. Faculty of Automatic Control, Electronics and Computer Science, Department of Automatic Control, and Robotics, Silesian University of Technology, Akademicka 16, Gliwice 44-100, Poland
6. Department of Mathematics and General Sciences, Prince Sultan University, Riyadh 11586, Saudi Arabia
7. Group of Mathematics, Faculty of Engineering, Ostim Technical University, 06374 Ankara, Turkey
8. Department of Mathematics, V.S.B Engineering College, Karur, India