%0 Journal Article
%A M. B. Muratbekov
%T Separability and estimates for the widths of sets connected with the domain of a nonlinear operator of Schr\"odinger type
%J Differencialʹnye uravneniâ
%D 1991
%P 1034-1042
%V 27
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1991_27_6_a15/
%G ru
%F DE_1991_27_6_a15