| 21 | ||
| Researcher: | Vivekanandan, K | |
| Guide: | Nambi, K | |
| University: | Bharathidasan University | |
| Language: | English | |
| Shodhganga | ||
| 22 | ||
| Researcher: | Vivekanandan Pillai B S | |
| Guide: | Thankamoni Amma S | |
| University: | University of Kerala | |
| Shodhganga | ||
| 23 | ||
| Researcher: | Vivekanandan K L | |
| Guide: | Suresh Babu D S | |
| University: | University of Kerala | |
| Language: | English | |
| Shodhganga | ||