| 1 | The rural economy of early medieval Bihar, 800 A D to 1200 A D |
| Researcher: | Krishna Kumar |
| Guide: | Singh, R B |
| University: | Vinoba Bhave University |
| Language: | English |
| 2 | |
| Researcher: | Krishna Kumar |
| Guide: | Rizvi, M Moshahid AlamChauhan, V S |
| University: | Jamia Milia Islamia |
| Language: | English |