%0 Journal Article %A O. A. Oleinik %A G. A. Iosif'yan %T Removable singularities on the boundary and uniqueness of solutions of boundary-value problems for second-order elliptic and parabolic equations %J Funkcionalʹnyj analiz i ego priloženiâ %D 1977 %P 54-67 %V 11 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/FAA_1977_11_3_a6/ %G ru %F FAA_1977_11_3_a6