%0 Journal Article %A G. Petrosyan %T On adjoint operators for fractional differentiation operators %J Vestnik rossijskih universitetov. Matematika %D 2020 %P 284-289 %V 25 %N 131 %I mathdoc %U http://geodesic.mathdoc.fr/item/VTAMU_2020_25_131_a3/ %G ru %F VTAMU_2020_25_131_a3