%0 Journal Article
%A V. P. Gromyko
%T A criterion for a $\pi d$-group to be special
%J Doklady Akademii Nauk
%D 1961
%P 261-262
%V 138
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1961_138_2_a2/
%G ru
%F DAN_1961_138_2_a2