%0 Journal Article %A A. A. Borisenko %T On compact submanifolds of nonpositive external curvature in Riemannian spaces %J Matematičeskie zametki %D 1996 %P 3-10 %V 60 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_1996_60_1_a0/ %G ru %F MZM_1996_60_1_a0