%0 Journal Article %A M. M. Vinogradov %T On a general algebraic theory of linear differential operators. I %J Doklady Akademii Nauk %D 1991 %P 275-279 %V 317 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1991_317_2_a3/ %G ru %F DAN_1991_317_2_a3