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@article{DAN_1963_148_1_a6, author = {S. P. Novikov}, title = {Homotopy properties of the group of diffeomorphisms of the sphere}, journal = {Doklady Akademii Nauk}, pages = {32--35}, publisher = {mathdoc}, volume = {148}, number = {1}, year = {1963}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1963_148_1_a6/} }
S. P. Novikov. Homotopy properties of the group of diffeomorphisms of the sphere. Doklady Akademii Nauk, Tome 148 (1963) no. 1, pp. 32-35. http://geodesic.mathdoc.fr/item/DAN_1963_148_1_a6/