| 1 | |
| Researcher: | Reddy, Balappagari Krishna |
| Guide: | Reddy, K. Sathyavelu |
| University: | Acharya Nagarjuna University, Guntur |
| Language: | English |
| 2 | |
| Researcher: | Krishna, Karanam Ananda |
| Guide: | Rao, K.R.S. SambasivaKarnati, Raja Ram Mohan Ray |
| University: | Acharya Nagarjuna University, Guntur |
| Language: | English |