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@article{AA_2001_13_4_a4, author = {S. V. Ivanov}, title = {A~contractible geodesically complete space of curvature $\le1$ and with arbitrarily small diameter}, journal = {Algebra i analiz}, pages = {110--118}, publisher = {mathdoc}, volume = {13}, number = {4}, year = {2001}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/AA_2001_13_4_a4/} }
S. V. Ivanov. A~contractible geodesically complete space of curvature $\le1$ and with arbitrarily small diameter. Algebra i analiz, Tome 13 (2001) no. 4, pp. 110-118. http://geodesic.mathdoc.fr/item/AA_2001_13_4_a4/