%0 Journal Article %A Görtz, Ulrich %T Alcove walks and nearby cycles on affine flag manifolds. %J Journal of Algebraic Combinatorics %D 2007 %P 415-430 %V 26 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/JAC_2007__26_4_a6/ %G en %F JAC_2007__26_4_a6