1. Department of Mathematics, T.K.R. College of Engineering and Technology, Hyderabad, India
2. Department of Mathematics, Gates Institute of Technology, Gooty, India
3. Department of Mathematics, B.L.D.E.A’s V.P. Dr. P.G. Halakatti College of Engineering and Technology, Vijayapur, India
4. Department of Mathematics, PVKK Institute of Technology, Anantapur, India