| 21 | |
| 22 | |
| Language: | English |
| 23 | |
| 24 | Convergence and approximation problems of general orthogonal expansions |
| Language: | English |
| 25 | |
| 26 | |
| Language: | English |
| 27 | |
| 28 | |
| Language: | English |
| 29 | |
| 30 | |
| Language: | English |
| 31 | |
| 32 | Studies on continued fractions and rational (pade) approximations |
| Language: | English |
| 33 | |
| 34 | |
| Language: | English |
| 35 | |
| 36 | study of interpolation approximation and strong approximation |
| Language: | English |
| 37 | |
| 38 | |
| Language: | English |
| 39 | Certain problems in approximation theory and summability theory |
| 40 | |
| Language: | English |