| 1 | |
| Researcher: | Bulcke, Camille |
| University: | University of Allahabad |
| Language: | Hindi |
| 2 | |
| Researcher: | Syed, Rafiq Husain |
| University: | University of Allahabad |
| Language: | Hindi |
| 3 | |
| Researcher: | Chettiar, A Chidambaranathan |
| University: | Annamalai University |
| Language: | English |
| 4 | |
| Researcher: | Singh, Janki Nath |
| University: | University of Allahabad |
| Language: | Hindi |