| 1 | |
| Researcher: | Perugupalli, Balaram |
| Guide: | Rao, Krishna N.V. |
| University: | Acharya Nagarjuna University, Guntur |
| Language: | English |
| Researcher: | Chigurupati, Mastanrao |
| Guide: | Rao, N.V.Krishna |
| University: | Acharya Nagarjuna University, Guntur |
| Language: | English |
| 3 | |
| Researcher: | Rao Murala, Ratna Leela |
| Guide: | E. Madhavi |
| University: | Acharya Nagarjuna University, Guntur |
| Language: | English |