| 1 | |
| Researcher: | Veerabhadra Rao, M R S |
| University: | Andhra University |
| Language: | English |
| 2 | |
| Researcher: | Masthanaiah, B |
| University: | Andhra University |
| Language: | English |
| 3 | |
| Researcher: | Suryakumari, A |
| Guide: | Rama Rao |
| University: | Sri Venkateswara University |
| Language: | English |