%0 Journal Article %A G. M. Henkin %T Linear superpositions of continuously differentiable functions %J Doklady Akademii Nauk %D 1964 %P 288-290 %V 157 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1964_157_2_a13/ %G ru %F DAN_1964_157_2_a13