| 1 | Some non-perturbative approximations for bound states of screened coulomb problems  | 
| Researcher: | Mukherjee, Uma | 
| Guide: | Dutt, Ranabir | 
| University: | Visva Bharati | 
| Language: | English | 
| 2 | |
| Researcher: | Bimbhra, P S | 
| Guide: | Kohli, D R | 
| University: | University of Roorkee | 
| Language: | English |