%0 Journal Article %A S. Ramanan %A A. Ramanathan %T Projective normality of flag varieties and Schubert varieties. %J Inventiones mathematicae %D 1985 %P 217-224 %V 79 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM_1985__79_143192/ %F IM_1985__79_143192