@article{MT_2007_10_1_a1,
     author = {P. D. Andreev},
     title = {Geometry of {Ideal} {Boundaries} of {Geodesic} {Spaces} with {Nonpositive} {Curvature} in the {Sense} of {Busemann}},
     journal = {Matemati\v{c}eskie trudy},
     pages = {16--28},
     publisher = {mathdoc},
     volume = {10},
     number = {1},
     year = {2007},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MT_2007_10_1_a1/}
}