| 1 | ||
| Researcher: | Nishanthi, S.T | |
| Guide: | Pathinettam padiyan, D | |
| University: | Manonmaniam Sundaranar University | |
| Language: | English | |
| Shodhganga | ||
| 2 | ||
| Researcher: | P.U., Nishanthi | |
| Guide: | Menon, Sunil Kumar S. | |
| University: | Mahatma Gandhi University, Kottayam | |
| Language: | English | |