%0 Journal Article %A M. D. Ramazanov %T Theorems on traces and extensions of functions from surfaces %J Doklady Akademii Nauk %D 1969 %P 1239-1242 %V 185 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1969_185_6_a9/ %G ru %F DAN_1969_185_6_a9