%0 Journal Article %A P. E. Sobolevskii %T Fractional integration by parts %J Doklady Akademii Nauk %D 1968 %P 1269-1272 %V 183 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1968_183_6_a8/ %G ru %F DAN_1968_183_6_a8