%0 Journal Article %A James A. Green %T Hall algebras, hereditary algebras and quantum groups. %J Inventiones mathematicae %D 1995 %P 361-378 %V 120 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM_1995__120_2_144280/ %F IM_1995__120_2_144280