| 1 | |
| Researcher: | Singh, Jagadish Narayan |
| University: | Patna University |
| Language: | English |
| 2 | |
| Researcher: | Ramesh Prasad |
| University: | Patna University |
| Language: | English |
| 3 | |
| Researcher: | Sinha, Nanda Dulal |
| Guide: | Prasad, K |
| University: | Patna University |
| Language: | English |