1. Department of Physics; Jawaharlal Technological University; Anantapur Andhra Pradesh India
2. Department of Humanities and Basic Sciences; G. Pulla Reddy Engineering College (Autonomous); Kurnool Andhra Pradesh India
3. Department of Physics; JNTUA College of Engineering; Pulivendula Andhra Pradesh India
4. School of Electrical Engineering and Computer Science; Gwangju Institute of Science and Technology; Gwangju Republic of Korea
5. Department of Physics; S.V.Degree College; Kadapa Andhra Pradesh India
6. Department of Physics; SKR&SKR Government Degree College for Women (Autonomous); Kadapa Andhra Pradesh India