| 1 | |
| Researcher: | Radhakrishnan, T R | 
| Guide: | Balasubrmaniyam, M | 
| University: | Annamalai University | 
| 2 | |
| Researcher: | Radhakrishnan, V N | 
| University: | Indian Institute of Science | 
| Language: | English | 
| 3 | |
| Researcher: | Radhakrishnan, Parakulam Venkateswaran | 
| University: | University of Mumbai | 
| Language: | English |