%0 Journal Article
%A L. Potyagailo
%A Sh. Wang
%T On the co-Hopficity of $3$-manifold groups
%J Algebra i analiz
%D 1999
%P 194-220
%V 11
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/AA_1999_11_5_a9/
%G ru
%F AA_1999_11_5_a9