%0 Journal Article %A Björner, Anders %A Lovász, László %T Chip-firing games on directed graphs %J Journal of Algebraic Combinatorics %D 1992 %P 305-328 %V 1 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/JAC_1992__1_4_a4/ %G en %F JAC_1992__1_4_a4