%0 Journal Article %A B. Z. Shapiro %T Spaces of linear differential equatios, and flag manifolds %J Izvestiya. Mathematics %D 1991 %P 183-197 %V 36 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM2_1991_36_1_a9/ %G en %F IM2_1991_36_1_a9