| 1 | |
| Researcher: | Radhakrishnan, S |
| Guide: | Agastialingam, S |
| University: | Annamalai University |
| Language: | English |
| 2 | |
| Researcher: | Radhakrishnan, S |
| Guide: | Agasthialingam, S |
| University: | Annamalai University |
| Language: | English |
| 3 | |
| Researcher: | Nair, S Radhakrishnan |
| Guide: | Namboothiri, E V N |
| University: | University of Kerala |
| Language: | English |