%0 Journal Article
%A A. A. Bovdi
%T A unitary subgroup and a congruence-subgroup of a multiplicative
%J Doklady Akademii Nauk
%D 1985
%P 1041-1044
%V 284
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1985_284_5_a2/
%G ru
%F DAN_1985_284_5_a2