| 1 | |
| Researcher: | Ezhuthachan, K Narayanan |
| University: | University of Madras |
| Language: | English |
| 2 | |
| Researcher: | Namboodiri, T K Narayanan |
| Guide: | Namboodiri, M V Vishnu |
| University: | University of Calicut |
| Language: | Malayalam |
| 3 | |
| Researcher: | Sankara, Narayanan P |
| Guide: | Chummar, Choondal |
| University: | University of Calicut |
| Language: | English |
| 4 | |
| Researcher: | Narayanan Nair, K |
| Guide: | Leelavathy, M |
| University: | University of Kerala |
| Language: | English |