%0 Journal Article %A I. F. Krasichkov-Ternovskii %T Approximation theorem for a~homogeneous %J Sbornik. Mathematics %D 2004 %P 1271-1289 %V 195 %N 9 %I mathdoc %U http://geodesic.mathdoc.fr/item/SM_2004_195_9_a2/ %G en %F SM_2004_195_9_a2