%0 Journal Article %A Anders Skovsted Buch %T Mutations of puzzles and equivariant cohomology of two-step flag varieties %J Annals of mathematics %D 2015 %P 173-220 %V 182 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4007/annals.2015.182.1.4/ %R 10.4007/annals.2015.182.1.4 %G en %F 10_4007_annals_2015_182_1_4