| 1 | Studies on coal macerals with special reference to high sulphur coals of India |
| Researcher: | Ray, Manmohan |
| University: | Jadavpur University |
| Language: | English |
| 2 | |
| Researcher: | Bhowmick, Alok Nath |
| University: | Banaras Hindu University |
| Language: | English |
| 3 | |
| Researcher: | Gupta, R B |
| University: | University of Pune |
| Language: | English |