%0 Journal Article %A M. V. Buslaeva %T An expansion theorem for the translation invariant subspace of the canonical differential operator %J Zapiski Nauchnykh Seminarov POMI %D 1970 %P 209-214 %V 19 %I mathdoc %U http://geodesic.mathdoc.fr/item/ZNSL_1970_19_a7/ %G ru %F ZNSL_1970_19_a7