%0 Journal Article %A V. G. Maz'ya %A T. O. Shaposhnikova %T Requirements on the boundary in the $L_p$-theory of elliptic boundary value problems %J Doklady Akademii Nauk %D 1980 %P 1055-1059 %V 251 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1980_251_5_a6/ %G ru %F DAN_1980_251_5_a6