%0 Journal Article
%A S. V. Buyalo
%T An example of a~four-dimensional manifold of negative curvature
%J Algebra i analiz
%D 1993
%P 193-199
%V 5
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/AA_1993_5_1_a6/
%G ru
%F AA_1993_5_1_a6