%0 Journal Article %A G. S. Balashova %T On~the extension of infinitely differentiable functions %J Izvestiya. Mathematics %D 1988 %P 603-620 %V 31 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM2_1988_31_3_a7/ %G en %F IM2_1988_31_3_a7