%0 Journal Article
%A Ya. L. Kreinin
%T On perfect compact nuclei of sets, effectively different from all $\Phi$-sets
%J Doklady Akademii Nauk
%D 1958
%P 436-438
%V 118
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1958_118_3_a4/
%G ru
%F DAN_1958_118_3_a4