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@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/} }
W. Rossmann. Picard-Lefschetz theory and characters of a semisimple Lie group.. Inventiones mathematicae, Tome 121 (1995) no. 3, pp. 579-612. http://geodesic.mathdoc.fr/item/IM_1995__121_3_144311/