| 1 | ||
| Researcher: | Chauhan, Virendra Kumar, Jayantilal | |
| Guide: | Vanar, B, D | |
| University: | Gujarat University, Ahmedabad | |
| Language: | English | |
| Shodhganga | ||
| 2 | ||
| Researcher: | Rao, Parnam, Srinivasa | |
| Guide: | Prasad, Devi, I | |
| University: | Acharya Nagarjuna University, Guntur | |
| Language: | English | |