| 1 | |
| Researcher: | Rao, Siva Sankara S |
| Guide: | Mohan, V.V. Sesha |
| University: | Acharya Nagarjuna University, Guntur |
| Language: | English |
| 2 | |
| Researcher: | Nagasailaja, Ramisetty V |
| Guide: | Das, V. Tulasi |
| University: | Acharya Nagarjuna University, Guntur |
| Language: | English |