| 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 |