1. Department of Physics Acharya Nagarjuna University Nagarjuna Nagar A.P. India
2. Food Technology Division Bhabha Atomic Research Center Mumbai M.H. India
3. Department of Physics Kakani Venkata Ratnam College Nandigama A.P. India
4. Department of Physics Andhra Loyola College Vijayawada A.P. India
5. Institute of Physics Jan Dlugosz University Czestochowa Poland