%0 Journal Article
%A S. V. Buyalo
%T Collapsing manifolds of nonpositive curvature.~I
%J Algebra i analiz
%D 1989
%P 74-94
%V 1
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/AA_1989_1_5_a1/
%G ru
%F AA_1989_1_5_a1