%0 Journal Article %A A. A. Vasilyeva %T Kolmogorov widths and approximation numbers of Sobolev classes with singular weights %J Algebra i analiz %D 2012 %P 3-39 %V 24 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/AA_2012_24_1_a0/ %G ru %F AA_2012_24_1_a0