| 1 | |
| Researcher: | Kumar, Katepogu Kiran |
| Guide: | Subramanyam, D.A.R. |
| University: | Acharya Nagarjuna University, Guntur |
| Language: | English |
| 2 | |
| Researcher: | Vangipuram, Vijayalakshmi |
| Guide: | G.V., Chalam |
| University: | Acharya Nagarjuna University, Guntur |
| Language: | English |