%0 Journal Article
%A S. V. Buyalo
%A V. L. Kobel'skii
%T Generalized graph-manifolds of nonpositive curvature
%J Algebra i analiz
%D 1999
%P 64-87
%V 11
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/AA_1999_11_2_a2/
%G ru
%F AA_1999_11_2_a2