%0 Journal Article %A Yu. P. Krasovskii %T Investigation of potentials associated with boundary problems for elliptic equations %J Izvestiya. Mathematics %D 1967 %P 569-622 %V 1 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM2_1967_1_3_a4/ %G en %F IM2_1967_1_3_a4