1. Department of Mathematics, Gokaraju Rangaraju Institute of Engineering and Technology, Bachupally, Hyderabad, India
2. Department of Mathematics, Government Degree College, Rajampeta, India
3. Department of EM&H, S.R.K.R. Engineering College, Bhimavaram, India
4. Department of Physics, S.V.A. Government College, Srikalahasti, India