@article{IM_1995__121_3_144311,
     author = {W. Rossmann},
     title = {Picard-Lefschetz theory and characters of a semisimple {Lie} group.},
     journal = {Inventiones mathematicae},
     pages = {579--612},
     publisher = {mathdoc},
     volume = {121},
     number = {3},
     year = {1995},
     zbl = {0851.22013},
     url = {http://geodesic.mathdoc.fr/item/IM_1995__121_3_144311/}
}