| 1 | |
| Researcher: | Mathur, S S | 
| University: | Banaras Hindu University | 
| Language: | English | 
| 2 | |
| Researcher: | Pandey, C D | 
| University: | Banaras Hindu University | 
| Language: | English | 
| 3 | |
| Researcher: | Suwal, P N | 
| University: | Banaras Hindu University | 
| Language: | English | 
| 4 | |
| Researcher: | Sreenivasan, Bharatham | 
| University: | University of Mumbai | 
| Language: | English |