%0 Journal Article %A W. Rossmann %T Picard-Lefschetz theory and characters of a semisimple Lie group. %J Inventiones mathematicae %D 1995 %P 579-612 %V 121 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM_1995__121_3_144311/ %F IM_1995__121_3_144311