%0 Journal Article %A A. S. Dikanskii %T Problems adjoint to elliptic pseudodifferential boundary value problems %J Doklady Akademii Nauk %D 1971 %P 1020-1023 %V 200 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1971_200_5_a2/ %G ru %F DAN_1971_200_5_a2