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@article{DAN_1964_158_1_a14, author = {A. V. Chernavskii}, title = {Isotopy of elements and spheres in $n$-dimensional space with $k>2/3$ $n-1$}, journal = {Doklady Akademii Nauk}, pages = {62--65}, publisher = {mathdoc}, volume = {158}, number = {1}, year = {1964}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1964_158_1_a14/} }
A. V. Chernavskii. Isotopy of elements and spheres in $n$-dimensional space with $k>2/3$ $n-1$. Doklady Akademii Nauk, Tome 158 (1964) no. 1, pp. 62-65. http://geodesic.mathdoc.fr/item/DAN_1964_158_1_a14/