@article{JAC_2007__26_4_a6,
     author = {G\"ortz, Ulrich},
     title = {Alcove walks and nearby cycles on affine flag manifolds.},
     journal = {Journal of Algebraic Combinatorics},
     pages = {415--430},
     publisher = {mathdoc},
     volume = {26},
     number = {4},
     year = {2007},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/JAC_2007__26_4_a6/}
}