| 1 | study of some entities which are preserved under a one to one structure-preservation transformation |
| Researcher: | Sharma, Ashok kumar |
| University: | University of Lucknow |
| Language: | English |
| 2 | |
| Researcher: | Das, Pradip Kumar |
| Guide: | Bose, S K |
| University: | University of Lucknow |
| Language: | English |