| 1 | ||
| Researcher: | Kachhayiya, Hansa Juthalal | |
| Guide: | Parmar, D. M. | |
| University: | Saurashtra University, Rajkot | |
| Language: | English | |
| Shodhganga | ||
| 2 | ||
| Researcher: | Bhargavacharyulu | |
| Guide: | Rao, P. Puranchandra | |
| University: | Acharya Nagarjuna University, Guntur | |
| Language: | English | |