%0 Journal Article %A I. V. Oseledets %T Lower bounds for separable approximations of the Hilbert kernel %J Sbornik. Mathematics %D 2007 %P 425-432 %V 198 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/SM_2007_198_3_a4/ %G en %F SM_2007_198_3_a4