| 1 | |
| Researcher: | Venkata Reddy, B |
| Guide: | Ramamurthi, R |
| University: | Sri Venkateswara University |
| Language: | English |
| 2 | |
| Researcher: | Singh, Bhanu Pratap |
| Guide: | Singh, T P |
| University: | Banaras Hindu University |
| Language: | English |
| 3 | |
| Researcher: | Kotaiah, K |
| Guide: | Rajabai Subba Rao, B |
| University: | Sri Venkateswara University |
| Language: | English |