%0 Journal Article
%A I. S. Yurchenko
%T On the existence of continual closed $U$-set
%J Izvestiya of Saratov University. Mathematics. Mechanics. Informatics
%D 2016
%P 76-79
%V 16
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/ISU_2016_16_1_a6/
%G ru
%F ISU_2016_16_1_a6