| 1 | |
| Researcher: | Yathagiri, Bheemasena |
| Guide: | Rao, Gumma Samba Siva |
| University: | Acharya Nagarjuna University, Guntur |
| Language: | English |
| 2 | |
| Researcher: | Mallineni, Nvenkataprasad |
| Guide: | Sambasivarao, Gumma |
| University: | Acharya Nagarjuna University, Guntur |
| Language: | English |