%0 Journal Article %A P. D. Andreev %T Geometry of Ideal Boundaries of Geodesic Spaces with Nonpositive Curvature in the Sense of Busemann %J Matematičeskie trudy %D 2007 %P 16-28 %V 10 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/MT_2007_10_1_a1/ %G ru %F MT_2007_10_1_a1