%0 Journal Article
%A G. G. Islamov
%T Two-sided estimates for $s$-numbers of integral operators that increase smoothness
%J Differencialʹnye uravneniâ
%D 1988
%P 353-356
%V 24
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1988_24_2_a25/
%G ru
%F DE_1988_24_2_a25