Kolmogorov and linear widths of weighted Sobolev-type classes on a finite interval
A new class of numerical sequences and its applications to sine and cosine series
Kvaziinvariantnye i psevdodifferentsiruemye deistvitel"noznachnye mery na nearkhimedovykh banakhovykh prostranstvakh
The Gel'fand widths of anisotropic Sobolev classes of smooth functions