| 1 | ||
| Researcher: | Raj Kumar | |
| University: | Panjab University | |
| Language: | English | |
| 2 | ||
| Researcher: | Gupta, Raj Kumar | |
| University: | University of Allahabad | |
| Language: | English | |
| Shodhganga | ||
| 3 | ||
| Researcher: | Pathria, Raj Kumar | |
| Guide: | Auluck, F CKothari, D C | |
| University: | University of Delhi | |
| Language: | English | |