%0 Journal Article
%A E. V. Shikin
%T On global isometric imbedding in $\mathbf{R}^3$ of some metrics of nonpositive curvature
%J Doklady Akademii Nauk
%D 1974
%P 61-63
%V 215
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1974_215_1_a14/
%G ru
%F DAN_1974_215_1_a14