| 1 | ||
| Researcher: | A. Balakrishna | |
| Guide: | Prof. Y.C. Ratnakaram | |
| University: | Sri Venkateswara University | |
| Language: | English | |
| Shodhganga | ||
| 2 | ||
| Researcher: | C. Venkateswarlu | |
| Guide: | Prof. Y.C. Ratnakaram | |
| University: | Sri Venkateswara University | |
| Language: | English | |
| Shodhganga | ||