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@article{IM2_2001_65_2_a0, author = {V. V. Volchkov}, title = {A~definitive version of the local two-radii theorem on hyperbolic spaces}, journal = {Izvestiya. Mathematics }, pages = {207--229}, publisher = {mathdoc}, volume = {65}, number = {2}, year = {2001}, language = {en}, url = {http://geodesic.mathdoc.fr/item/IM2_2001_65_2_a0/} }
V. V. Volchkov. A~definitive version of the local two-radii theorem on hyperbolic spaces. Izvestiya. Mathematics , Tome 65 (2001) no. 2, pp. 207-229. http://geodesic.mathdoc.fr/item/IM2_2001_65_2_a0/