| 1 | |
| Researcher: | Nand Kishore |
| University: | University of Allahabad |
| Language: | English |
| 2 | |
| Researcher: | Bhaduri, Sadananada |
| University: | University of Calcutta |
| Language: | English |
| 3 | |
| Researcher: | Vasudeva Moorthy, Matam |
| University: | University of Mumbai |
| Language: | English |