| 1 | ||
| Researcher: | Venugopalan Nair, R | |
| University: | Andhra University | |
| Language: | English | |
| 2 | ||
| Researcher: | Sitaramacharyulu, K V | |
| University: | Andhra University | |
| Language: | English | |
| 3 | ||
| Researcher: | Deshpande, G G | |
| Guide: | n.d. | |
| University: | Savitribai Phule Pune University | |
| Language: | English | |
| Shodhganga | ||
| 4 | ||
| Researcher: | Venkata Rao, Muppa | |
| Guide: | Sreeramachandra Rao, KRao, A T | |
| University: | Andhra University | |
| Language: | English | |