| 1 | |
| Researcher: | Tadiboyina, Ravi Sankar |
| Guide: | Rao, Prasada, P.T.S.R.K |
| University: | Acharya Nagarjuna University, Guntur |
| Language: | English |
| 2 | |
| Researcher: | Subramanian, S K |
| Guide: | Krishnamoorthy, M S |
| University: | Madurai Kamaraj University |
| Language: | English |