1. Department of Mathematics, Gandhi Institute of Excellent Technocrats (GIET), Ghangapatana, India
2. Department of Mathematics, S. K. C. G. Autonomous College, Paralakhemundi, India
3. Department of Computer Science and Engineering, Jaypee University of Information Technology, Waknaghat, India
4. Department of Mathematics, Ravenshaw University, Cuttack, India