| 1 | |
| Researcher: | Chandra Bali Singh |
| University: | Banaras Hindu University |
| Language: | English |
| 2 | |
| Researcher: | Jayalakshmi Amma, D |
| University: | University of Kerala |
| Language: | English |
| 3 | |
| Researcher: | Lal Bahadur |
| University: | Dr Bhimrao Ambedkar University |
| Language: | English |