%0 Journal Article %A I. G. Tsar'kov %T On the extension and smoothing of vector-valued functions %J Izvestiya. Mathematics %D 1995 %P 847-879 %V 59 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM2_1995_59_4_a9/ %G en %F IM2_1995_59_4_a9