| 1 | |
| Researcher: | Singh, Chandra Deo |
| University: | University of Calcutta |
| Language: | Hindi |
| 2 | |
| Researcher: | Rai, Vidhan Chandra |
| University: | Banaras Hindu University |
| Language: | Hindi |
| 3 | |
| Researcher: | Rai, Bidhan Chandra |
| Guide: | Mangla Prasad |
| University: | Banaras Hindu University |
| Language: | English |