%0 Journal Article
%A Yu. B. Rudyak
%T On the fundamental group of a three-dimensional manifold
%J Doklady Akademii Nauk
%D 1973
%P 771-774
%V 210
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1973_210_4_a5/
%G ru
%F DAN_1973_210_4_a5