%0 Journal Article
%A Yu. L. Ershov
%T The $d$-rank of an $\alpha$-space does not exceed~$1$
%J Algebra i logika
%D 2019
%P 706-713
%V 58
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/AL_2019_58_6_a1/
%G ru
%F AL_2019_58_6_a1