%0 Journal Article
%A S. P. Novikov
%T Homotopy properties of the group of diffeomorphisms of the sphere
%J Doklady Akademii Nauk
%D 1963
%P 32-35
%V 148
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1963_148_1_a6/
%G ru
%F DAN_1963_148_1_a6