@article{IM_1976__36_142418, author = {T.A. Springer}, title = {Trigonometric {Sums,} {Green} {Functions} on {Finite} {Groups} and {Representation} of {Weyl} {Groups.}}, journal = {Inventiones mathematicae}, pages = {173--208}, publisher = {mathdoc}, volume = {36}, year = {1976}, zbl = {0374.20054}, url = {http://geodesic.mathdoc.fr/item/IM_1976__36_142418/} }