%0 Journal Article %A E. Akyildiz %T SL2 actions and cohomology of Schubert varieties %J Banach Center Publications %D 1990 %P 13-26 %V 26 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/-26-2-13-26/ %R 10.4064/-26-2-13-26 %G en %F 10_4064__26_2_13_26