%0 Journal Article %A M. D. Ramazanov %T Theorems on traces and extensions of functions from surfaces %J Doklady Akademii Nauk %D 1970 %P 784-787 %V 190 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1970_190_4_a11/ %G ru %F DAN_1970_190_4_a11