%0 Journal Article %A P. I. Lizorkin %T Characteristics of boundary values of functions of $L^r_p(E_n)$ on hyperplanes %J Doklady Akademii Nauk %D 1963 %P 984-986 %V 150 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1963_150_5_a7/ %G ru %F DAN_1963_150_5_a7