| 1 | ||
| Researcher: | Valli, P | |
| Guide: | Chandran, M R | |
| University: | Bharathidasan University | |
| Language: | English | |
| Shodhganga | ||
| 2 | ||
| Researcher: | Valli, P M | |
| Guide: | Satyanarayana, B | |
| University: | Andhra University | |
| Language: | English | |
| 3 | ||
| Researcher: | Sri Valli, P | |
| Guide: | Vasanth Rao | |
| University: | Osmania University | |
| Language: | English | |