| 1 | |
| Researcher: | Ram Prakash |
| University: | Panjab University |
| Language: | English |
| 2 | |
| Researcher: | Ram Prakash Singh |
| University: | University of Allahabad |
| Language: | English |
| 3 | |
| Researcher: | Kulshreshtha, Ram Prakash |
| University: | University of Rajasthan |
| Language: | Hindi |