| 1 | |
| Researcher: | Manmoharan Nair, K |
| Guide: | Sarngadharan, M |
| University: | University of Kerala |
| Language: | English |
| 2 | |
| Researcher: | Ashok Kumar, N |
| Guide: | Neelamegam, R |
| University: | Madurai Kamaraj University |
| Language: | English |
| 3 | |
| Researcher: | Peter, P C |
| University: | University of Mumbai |
| Language: | English |