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@article{MZM_1981_29_2_a8, author = {S. V. Buyalo}, title = {Manifolds of nonpositive curvature with small volume}, journal = {Matemati\v{c}eskie zametki}, pages = {243--252}, publisher = {mathdoc}, volume = {29}, number = {2}, year = {1981}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1981_29_2_a8/} }
S. V. Buyalo. Manifolds of nonpositive curvature with small volume. Matematičeskie zametki, Tome 29 (1981) no. 2, pp. 243-252. http://geodesic.mathdoc.fr/item/MZM_1981_29_2_a8/