%0 Journal Article
%A V. P. Gromyko
%T A new criterion of specialty for $\pi d$-groups with a given number of classes of unattainable iso-ordic $\pi d$-subgroups
%J Doklady Akademii Nauk
%D 1963
%P 23-26
%V 151
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1963_151_1_a4/
%G ru
%F DAN_1963_151_1_a4