%0 Journal Article
%A V. M. Kopytov
%T Contractions of infrainvariant systems of subgroups
%J Algebra i logika
%D 2009
%P 606-627
%V 48
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/AL_2009_48_5_a3/
%G ru
%F AL_2009_48_5_a3