%0 Journal Article
%A G. R. Belitskii
%T Normal forms for formal series and germs of $C^\infty$-mappings with respect to the action of a~group
%J Izvestiya. Mathematics 
%D 1976
%P 809-821
%V 10
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IM2_1976_10_4_a8/
%G en
%F IM2_1976_10_4_a8