%0 Journal Article %A Giovanni Gaiffi %T The actions of Sn+1 and Sn on the cohomology ring of a Coxeter arrangement of type An-1. %J Manuscripta mathematica %D 1996 %P 83-94 %V 91 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/MM2_1996__91_3_156216/ %F MM2_1996__91_3_156216